{"version":3,"file":"vendor.duplexer2.856c4194ea177f81.js","mappings":";;;;;;;;;;;;;;;;;;;;;AAAA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEa;;AAEb;;AAEA,UAAU,mBAAO,CAAC,KAAsB;AACxC;;AAEA;;AAEA;AACA,cAAc,mBAAO,CAAC,KAAS;AAC/B;;AAEA;AACA;AACA;;AAEA;;AAEA;AACA,SAAS,yCAA8B;;AAEvC;AACA;AACA;AACA;;AAEA;AACA,aAAa,mBAAO,CAAC,KAA2B;AAChD;;AAEA;;AAEA,aAAa,mCAA6B;AAC1C,4BAA4B,qBAAM,mBAAmB,qBAAM,mFAAmF;AAC9I;AACA;AACA;AACA;AACA;AACA;;AAEA;;AAEA;AACA,yBAAyB,mBAAO,CAAC,KAAc;AAC/C,gBAAgB,mBAAO,CAAC,KAAU;AAClC;;AAEA;AACA,gBAAgB,mBAAO,CAAC,KAAM;AAC9B;AACA;AACA;AACA,EAAE;AACF;AACA;AACA;;AAEA,iBAAiB,mBAAO,CAAC,KAA+B;AACxD,kBAAkB,mBAAO,CAAC,KAA4B;AACtD;;AAEA;;AAEA;;AAEA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA,yEAAyE,6EAA6E;AACtJ;;AAEA;AACA,qBAAqB,mBAAO,CAAC,KAAkB;;AAE/C;;AAEA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAEA;;AAEA;AACA;AACA;AACA;AACA;;AAEA,iDAAiD,0FAA0F;;AAE3I;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;;AAEA;AACA;AACA;AACA;;AAEA;AACA;;AAEA;AACA;;AAEA;AACA;AACA;AACA,wCAAwC,mDAAwC;AAChF;AACA;AACA;AACA;;AAEA;AACA,qBAAqB,mBAAO,CAAC,KAAkB;;AAE/C;;AAEA;;AAEA;AACA;;AAEA;AACA;;AAEA;AACA;;AAEA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA,GAAG;AACH;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA,CAAC;;AAED;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,IAAI;AACJ;AACA;;AAEA;AACA;;AAEA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA,IAAI;AACJ;AACA;AACA;AACA;AACA,MAAM;AACN;AACA;AACA;;AAEA;AACA,kGAAkG;AAClG,QAAQ;AACR;AACA,QAAQ;AACR;AACA;AACA;AACA,4FAA4F;AAC5F,UAAU;AACV;AACA;AACA;AACA,MAAM;AACN;AACA;AACA;;AAEA;AACA;;AAEA;AACA;AACA;AACA;AACA,IAAI;AACJ;AACA;AACA,gDAAgD;;AAEhD;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAEA;AACA;AACA,sCAAsC,mDAAwC;AAC9E;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA,IAAI;AACJ;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,4EAA4E;AAC5E;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;;AAEA;;AAEA;AACA;AACA;AACA;AACA;AACA,6DAA6D;AAC7D;AACA;;AAEA;;AAEA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA,IAAI;AACJ;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA,sCAAsC;;AAEtC;AACA;AACA;AACA,IAAI;AACJ;AACA;;AAEA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAEA;;AAEA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,wDAAwD;AACxD;AACA;;AAEA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,YAAY;AACZ;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA,gEAAgE,OAAO,oBAAoB,OAAO;;AAEl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qBAAqB;;AAErB;AACA;;AAEA;AACA;AACA;AACA;;AAEA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA,oBAAoB,SAAS;AAC7B,sCAAsC,mBAAmB;AACz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kBAAkB,yBAAyB;AAC3C;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,CAAC;;AAED;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA,mDAAmD;AACnD;AACA,mDAAmD,iEAAiE;AACpH;AACA,IAAI;AACJ;AACA;AACA;;AAEA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,IAAI;AACJ;AACA;AACA,IAAI;AACJ;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,sCAAsC;AACtC;AACA;AACA;AACA;AACA,uCAAuC;AACvC,QAAQ;AACR;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,uCAAuC;AACvC,QAAQ;AACR;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;;AAEA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA,iCAAiC,OAAO;AACxC;AACA;AACA;AACA;;;;;;;AC1/BA,iBAAiB;;AAEjB;AACA;AACA;;;;;;;;;ACJA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAEa;;AAEb;;AAEA,gBAAgB,mBAAO,CAAC,KAAqB;;AAE7C;AACA,yBAAyB,mBAAO,CAAC,KAAc;AAC/C,gBAAgB,mBAAO,CAAC,KAAU;AAClC;;AAEA;;AAEA;AACA;;AAEA;AACA;;AAEA;AACA;AACA;;;;;;;AC9CA,UAAU,0CAAqD;AAC/D,cAAc;AACd,gBAAgB;AAChB,6CAAuD;AACvD,2CAAmD;AACnD,8CAAyD;AACzD,gDAA6D;;;;;;;;ACN7D,wDAA+C;;;;;;;;;ACA/C;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,0CAA0C,aAAa;AACvD;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEa;;AAEb;;AAEA,aAAa,mBAAO,CAAC,KAAkB;;AAEvC;AACA,yBAAyB,mBAAO,CAAC,KAAc;AAC/C,gBAAgB,mBAAO,CAAC,KAAU;AAClC;;AAEA;;AAEA;AACA;AACA;;AAEA;;AAEA;AACA;AACA;;AAEA;AACA;;AAEA;AACA;;AAEA;;AAEA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;;AAEA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;;AAEA;AACA;AACA;AACA;;AAEA;AACA;;AAEA;AACA;;AAEA;AACA;AACA;;AAEA;AACA;;AAEA;AACA;AACA;AACA,KAAK;AACL,IAAI;AACJ;AACA;AACA;;AAEA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA,IAAI;AACJ;AACA;AACA;AACA;AACA;;AAEA;AACA;;AAEA;AACA;AACA;AACA,GAAG;AACH;;AAEA;AACA;;AAEA;AACA;;AAEA;AACA;AACA;;AAEA;;AAEA;AACA;;;;;;;;ACrNA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;;AAEa;;AAEb;;AAEA,UAAU,mBAAO,CAAC,KAAsB;AACxC;;AAEA;AACA;AACA;AACA;AACA;AACA,GAAG;AACH;AACA;;AAEA;;AAEA;AACA,yBAAyB,mBAAO,CAAC,KAAc;AAC/C,gBAAgB,mBAAO,CAAC,KAAU;AAClC;;AAEA,eAAe,mBAAO,CAAC,IAAoB;AAC3C,eAAe,mBAAO,CAAC,KAAoB;;AAE3C;;AAEA;AACA;AACA;AACA,kBAAkB,iBAAiB;AACnC;AACA;AACA;AACA;;AAEA;AACA;;AAEA;AACA;;AAEA;;AAEA;;AAEA;AACA;;AAEA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,CAAC;;AAED;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA,GAAG;AACH;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA,CAAC;;AAED;AACA;AACA;;AAEA;AACA;;;;;;;;AClIa;;AAEb,kDAAkD,0CAA0C;;AAE5F,aAAa,mCAA6B;AAC1C,WAAW,mBAAO,CAAC,KAAM;;AAEzB;AACA;AACA;;AAEA;AACA;AACA;;AAEA;AACA;AACA;AACA;;AAEA;AACA,kBAAkB;AAClB,gDAAgD;AAChD;AACA;AACA;;AAEA;AACA,kBAAkB;AAClB;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA,wDAAwD;AACxD;AACA;AACA;;AAEA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA,KAAK;AACL;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA,CAAC;;AAED;AACA;AACA,6BAA6B,qBAAqB;AAClD;AACA;AACA;;;;;;;;AC7Ea;;AAEb;;AAEA,UAAU,mBAAO,CAAC,KAAsB;AACxC;;AAEA;AACA;AACA;;AAEA;AACA;;AAEA;AACA;AACA;AACA,MAAM;AACN;AACA;AACA,QAAQ;AACR;AACA;AACA;AACA;;AAEA;AACA;;AAEA;AACA;;AAEA;AACA;AACA;;AAEA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA,QAAQ;AACR;AACA;AACA;AACA,MAAM;AACN;AACA;AACA,GAAG;;AAEH;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAEA;AACA;AACA;AACA;;;;;;;;;ACnFA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAEa;;AAEb;;AAEA,UAAU,mBAAO,CAAC,KAAsB;AACxC;;AAEA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA,kBAAkB,OAAO,uCAAuC,OAAO;AACvE;;AAEA;AACA;AACA;;AAEA;;AAEA;AACA,yBAAyB,mBAAO,CAAC,KAAc;AAC/C,gBAAgB,mBAAO,CAAC,KAAU;AAClC;;AAEA;AACA;AACA,aAAa,mBAAO,CAAC,KAAgB;AACrC;AACA;;AAEA;AACA,aAAa,mBAAO,CAAC,KAA2B;AAChD;;AAEA;;AAEA,aAAa,mCAA6B;AAC1C,4BAA4B,qBAAM,mBAAmB,qBAAM,mFAAmF;AAC9I;AACA;AACA;AACA;AACA;AACA;;AAEA;;AAEA,kBAAkB,mBAAO,CAAC,KAA4B;;AAEtD;;AAEA;;AAEA;AACA,qBAAqB,mBAAO,CAAC,KAAkB;;AAE/C;;AAEA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAEA;;AAEA;AACA;AACA;AACA;AACA;AACA;;AAEA,iDAAi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qBAAqB,mBAAO,CAAC,KAAkB;;AAE/C;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;;AAEA;;AAEA;AACA;;AAEA;AACA;;AAEA;;AAEA;;AAEA;AACA;;AAEA;AACA;;AAEA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA,IAAI;AACJ;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAEA;AACA;AACA;AACA;;AAEA,iCAAiC;;AAEjC;;AAEA,2CAA2C;AAC3C;AACA;AACA;;AAEA;AACA;;AAEA;AACA;;AAEA;AACA;;AAEA;AACA;;AAEA;AACA;;AAEA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,CAAC;;AAED;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;;AAEA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,MAAM;AACN;AACA;AACA;AACA,IAAI;AACJ;AACA;;AAEA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA,mDAAmD;AACnD;AACA;;AAEA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,IAAI;AACJ;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;;AAEA;;AAEA,oDAAoD;AACp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yCAAyC;AACzC;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA,GAAG;AACH;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA,CAAC;;AAED;AACA;AACA;AACA;AACA;AACA;;;;;;;;AC5qBA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEa;;AAEb;;AAEA,aAAa,mCAA6B;AAC1C;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,6BAA6B;AAC7B;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA,SAAqB;AACrB;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,IAAI;AACJ;AACA;AACA;AACA;AACA;;AAEA;;AAEA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA,6BAA6B,sCAAsC,sCAAsC;AACz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vSa;;AAEb,aAAa,mBAAO,CAAC,KAAiB;;AAEtC;AACA;AACA;AACA;AACA;AACA;;AAEA;;AAEA;AACA;AACA;;AAEA;AACA;AACA;;AAEA;;AAEA;AACA;AACA,GAAG;;AAEH;AACA;AACA,GAAG;;AAEH;AACA;AACA;AACA;AACA;AACA,GAAG;;AAEH;AACA;AACA,GAAG;;AAEH;AACA;AACA;AACA,KAAK;;AAEL;AACA;AACA,KAAK;AACL;AACA;;AAEA,kEAAkE,cAAc,sBAAsB;;AAEtG;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;;AAEA,4BAA4B;;;;;;;;AC3E5B;AACA,aAAa,mBAAO,CAAC,KAAQ;AAC7B;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,EAAE;AACF;AACA;AACA,EAAE,cAAc;AAChB;;AAEA;AACA;AACA;;AAEA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;AACA;AACA;AACA,MAAM;AACN;AACA;AACA,IAAI;AACJ;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA;;AAEA;AACA;AACA;AACA;AACA;AACA","sources":["webpack://admin/./node_modules/duplexer2/node_modules/readable-stream/lib/_stream_readable.js","webpack://admin/./node_modules/duplexer2/node_modules/isarray/index.js","webpack://admin/./node_modules/duplexer2/node_modules/readable-stream/lib/_stream_passthrough.js","webpack://admin/./node_modules/duplexer2/node_modules/readable-stream/readable-browser.js","webpack://admin/./node_modules/duplexer2/node_modules/readable-stream/lib/internal/streams/stream-browser.js","webpack://admin/./node_modules/duplexer2/node_modules/readable-stream/lib/_stream_transform.js","webpack://admin/./node_modules/duplexer2/node_modules/readable-stream/lib/_stream_duplex.js","webpack://admin/./node_modules/duplexer2/node_modules/readable-stream/lib/internal/streams/BufferList.js","webpack://admin/./node_modules/duplexer2/node_modules/readable-stream/lib/internal/streams/destroy.js","webpack://admin/./node_modules/duplexer2/node_modules/readable-stream/lib/_stream_writable.js","webpack://admin/./node_modules/duplexer2/node_modules/string_decoder/lib/string_decoder.js","webpack://admin/./node_modules/duplexer2/index.js","webpack://admin/./node_modules/duplexer2/node_modules/safe-buffer/index.js"],"sourcesContent":["// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n'use strict';\n\n/*<replacement>*/\n\nvar pna = require('process-nextick-args');\n/*</replacement>*/\n\nmodule.exports = Readable;\n\n/*<replacement>*/\nvar isArray = require('isarray');\n/*</replacement>*/\n\n/*<replacement>*/\nvar Duplex;\n/*</replacement>*/\n\nReadable.ReadableState = ReadableState;\n\n/*<replacement>*/\nvar EE = require('events').EventEmitter;\n\nvar EElistenerCount = function (emitter, type) {\n return emitter.listeners(type).length;\n};\n/*</replacement>*/\n\n/*<replacement>*/\nvar Stream = require('./internal/streams/stream');\n/*</replacement>*/\n\n/*<replacement>*/\n\nvar Buffer = require('safe-buffer').Buffer;\nvar OurUint8Array = (typeof global !== 'undefined' ? global : typeof window !== 'undefined' ? window : typeof self !== 'undefined' ? self : {}).Uint8Array || function () {};\nfunction _uint8ArrayToBuffer(chunk) {\n return Buffer.from(chunk);\n}\nfunction _isUint8Array(obj) {\n return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;\n}\n\n/*</replacement>*/\n\n/*<replacement>*/\nvar util = Object.create(require('core-util-is'));\nutil.inherits = require('inherits');\n/*</replacement>*/\n\n/*<replacement>*/\nvar debugUtil = require('util');\nvar debug = void 0;\nif (debugUtil && debugUtil.debuglog) {\n debug = debugUtil.debuglog('stream');\n} else {\n debug = function () {};\n}\n/*</replacement>*/\n\nvar BufferList = require('./internal/streams/BufferList');\nvar destroyImpl = require('./internal/streams/destroy');\nvar StringDecoder;\n\nutil.inherits(Readable, Stream);\n\nvar kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume'];\n\nfunction prependListener(emitter, event, fn) {\n // Sadly this is not cacheable as some libraries bundle their own\n // event emitter implementation with them.\n if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn);\n\n // This is a hack to make sure that our error handler is attached before any\n // userland ones. NEVER DO THIS. This is here only because this code needs\n // to continue to work with older versions of Node.js that do not include\n // the prependListener() method. The goal is to eventually remove this hack.\n if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]];\n}\n\nfunction ReadableState(options, stream) {\n Duplex = Duplex || require('./_stream_duplex');\n\n options = options || {};\n\n // Duplex streams are both readable and writable, but share\n // the same options object.\n // However, some cases require setting options to different\n // values for the readable and the writable sides of the duplex stream.\n // These options can be provided separately as readableXXX and writableXXX.\n var isDuplex = stream instanceof Duplex;\n\n // object stream flag. Used to make read(n) ignore n and to\n // make all the buffer merging and length checks go away\n this.objectMode = !!options.objectMode;\n\n if (isDuplex) this.objectMode = this.objectMode || !!options.readableObjectMode;\n\n // the point at which it stops calling _read() to fill the buffer\n // Note: 0 is a valid value, means \"don't call _read preemptively ever\"\n var hwm = options.highWaterMark;\n var readableHwm = options.readableHighWaterMark;\n var defaultHwm = this.objectMode ? 16 : 16 * 1024;\n\n if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (readableHwm || readableHwm === 0)) this.highWaterMark = readableHwm;else this.highWaterMark = defaultHwm;\n\n // cast to ints.\n this.highWaterMark = Math.floor(this.highWaterMark);\n\n // A linked list is used to store data chunks instead of an array because the\n // linked list can remove elements from the beginning faster than\n // array.shift()\n this.buffer = new BufferList();\n this.length = 0;\n this.pipes = null;\n this.pipesCount = 0;\n this.flowing = null;\n this.ended = false;\n this.endEmitted = false;\n this.reading = false;\n\n // a flag to be able to tell if the event 'readable'/'data' is emitted\n // immediately, or on a later tick. We set this to true at first, because\n // any actions that shouldn't happen until \"later\" should generally also\n // not happen before the first read call.\n this.sync = true;\n\n // whenever we return null, then we set a flag to say\n // that we're awaiting a 'readable' event emission.\n this.needReadable = false;\n this.emittedReadable = false;\n this.readableListening = false;\n this.resumeScheduled = false;\n\n // has it been destroyed\n this.destroyed = false;\n\n // Crypto is kind of old and crusty. Historically, its default string\n // encoding is 'binary' so we have to make this configurable.\n // Everything else in the universe uses 'utf8', though.\n this.defaultEncoding = options.defaultEncoding || 'utf8';\n\n // the number of writers that are awaiting a drain event in .pipe()s\n this.awaitDrain = 0;\n\n // if true, a maybeReadMore has been scheduled\n this.readingMore = false;\n\n this.decoder = null;\n this.encoding = null;\n if (options.encoding) {\n if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;\n this.decoder = new StringDecoder(options.encoding);\n this.encoding = options.encoding;\n }\n}\n\nfunction Readable(options) {\n Duplex = Duplex || require('./_stream_duplex');\n\n if (!(this instanceof Readable)) return new Readable(options);\n\n this._readableState = new ReadableState(options, this);\n\n // legacy\n this.readable = true;\n\n if (options) {\n if (typeof options.read === 'function') this._read = options.read;\n\n if (typeof options.destroy === 'function') this._destroy = options.destroy;\n }\n\n Stream.call(this);\n}\n\nObject.defineProperty(Readable.prototype, 'destroyed', {\n get: function () {\n if (this._readableState === undefined) {\n return false;\n }\n return this._readableState.destroyed;\n },\n set: function (value) {\n // we ignore the value if the stream\n // has not been initialized yet\n if (!this._readableState) {\n return;\n }\n\n // backward compatibility, the user is explicitly\n // managing destroyed\n this._readableState.destroyed = value;\n }\n});\n\nReadable.prototype.destroy = destroyImpl.destroy;\nReadable.prototype._undestroy = destroyImpl.undestroy;\nReadable.prototype._destroy = function (err, cb) {\n this.push(null);\n cb(err);\n};\n\n// Manually shove something into the read() buffer.\n// This returns true if the highWaterMark has not been hit yet,\n// similar to how Writable.write() returns true if you should\n// write() some more.\nReadable.prototype.push = function (chunk, encoding) {\n var state = this._readableState;\n var skipChunkCheck;\n\n if (!state.objectMode) {\n if (typeof chunk === 'string') {\n encoding = encoding || state.defaultEncoding;\n if (encoding !== state.encoding) {\n chunk = Buffer.from(chunk, encoding);\n encoding = '';\n }\n skipChunkCheck = true;\n }\n } else {\n skipChunkCheck = true;\n }\n\n return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);\n};\n\n// Unshift should *always* be something directly out of read()\nReadable.prototype.unshift = function (chunk) {\n return readableAddChunk(this, chunk, null, true, false);\n};\n\nfunction readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {\n var state = stream._readableState;\n if (chunk === null) {\n state.reading = false;\n onEofChunk(stream, state);\n } else {\n var er;\n if (!skipChunkCheck) er = chunkInvalid(state, chunk);\n if (er) {\n stream.emit('error', er);\n } else if (state.objectMode || chunk && chunk.length > 0) {\n if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) {\n chunk = _uint8ArrayToBuffer(chunk);\n }\n\n if (addToFront) {\n if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true);\n } else if (state.ended) {\n stream.emit('error', new Error('stream.push() after EOF'));\n } else {\n state.reading = false;\n if (state.decoder && !encoding) {\n chunk = state.decoder.write(chunk);\n if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state);\n } else {\n addChunk(stream, state, chunk, false);\n }\n }\n } else if (!addToFront) {\n state.reading = false;\n }\n }\n\n return needMoreData(state);\n}\n\nfunction addChunk(stream, state, chunk, addToFront) {\n if (state.flowing && state.length === 0 && !state.sync) {\n stream.emit('data', chunk);\n stream.read(0);\n } else {\n // update the buffer info.\n state.length += state.objectMode ? 1 : chunk.length;\n if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);\n\n if (state.needReadable) emitReadable(stream);\n }\n maybeReadMore(stream, state);\n}\n\nfunction chunkInvalid(state, chunk) {\n var er;\n if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {\n er = new TypeError('Invalid non-string/buffer chunk');\n }\n return er;\n}\n\n// if it's past the high water mark, we can push in some more.\n// Also, if we have no data yet, we can stand some\n// more bytes. This is to work around cases where hwm=0,\n// such as the repl. Also, if the push() triggered a\n// readable event, and the user called read(largeNumber) such that\n// needReadable was set, then we ought to push more, so that another\n// 'readable' event will be triggered.\nfunction needMoreData(state) {\n return !state.ended && (state.needReadable || state.length < state.highWaterMark || state.length === 0);\n}\n\nReadable.prototype.isPaused = function () {\n return this._readableState.flowing === false;\n};\n\n// backwards compatibility.\nReadable.prototype.setEncoding = function (enc) {\n if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder;\n this._readableState.decoder = new StringDecoder(enc);\n this._readableState.encoding = enc;\n return this;\n};\n\n// Don't raise the hwm > 8MB\nvar MAX_HWM = 0x800000;\nfunction computeNewHighWaterMark(n) {\n if (n >= MAX_HWM) {\n n = MAX_HWM;\n } else {\n // Get the next highest power of 2 to prevent increasing hwm excessively in\n // tiny amounts\n n--;\n n |= n >>> 1;\n n |= n >>> 2;\n n |= n >>> 4;\n n |= n >>> 8;\n n |= n >>> 16;\n n++;\n }\n return n;\n}\n\n// This function is designed to be inlinable, so please take care when making\n// changes to the function body.\nfunction howMuchToRead(n, state) {\n if (n <= 0 || state.length === 0 && state.ended) return 0;\n if (state.objectMode) return 1;\n if (n !== n) {\n // Only flow one buffer at a time\n if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length;\n }\n // If we're asking for more than the current hwm, then raise the hwm.\n if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n);\n if (n <= state.length) return n;\n // Don't have enough\n if (!state.ended) {\n state.needReadable = true;\n return 0;\n }\n return state.length;\n}\n\n// you can override either this method, or the async _read(n) below.\nReadable.prototype.read = function (n) {\n debug('read', n);\n n = parseInt(n, 10);\n var state = this._readableState;\n var nOrig = n;\n\n if (n !== 0) state.emittedReadable = false;\n\n // if we're doing read(0) to trigger a readable event, but we\n // already have a bunch of data in the buffer, then just trigger\n // the 'readable' event and move on.\n if (n === 0 && state.needReadable && (state.length >= state.highWaterMark || state.ended)) {\n debug('read: emitReadable', state.length, state.ended);\n if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this);\n return null;\n }\n\n n = howMuchToRead(n, state);\n\n // if we've ended, and we're now clear, then finish it up.\n if (n === 0 && state.ended) {\n if (state.length === 0) endReadable(this);\n return null;\n }\n\n // All the actual chunk generation logic needs to be\n // *below* the call to _read. The reason is that in certain\n // synthetic stream cases, such as passthrough streams, _read\n // may be a completely synchronous operation which may change\n // the state of the read buffer, providing enough data when\n // before there was *not* enough.\n //\n // So, the steps are:\n // 1. Figure out what the state of things will be after we do\n // a read from the buffer.\n //\n // 2. If that resulting state will trigger a _read, then call _read.\n // Note that this may be asynchronous, or synchronous. Yes, it is\n // deeply ugly to write APIs this way, but that still doesn't mean\n // that the Readable class should behave improperly, as streams are\n // designed to be sync/async agnostic.\n // Take note if the _read call is sync or async (ie, if the read call\n // has returned yet), so that we know whether or not it's safe to emit\n // 'readable' etc.\n //\n // 3. Actually pull the requested chunks out of the buffer and return.\n\n // if we need a readable event, then we need to do some reading.\n var doRead = state.needReadable;\n debug('need readable', doRead);\n\n // if we currently have less than the highWaterMark, then also read some\n if (state.length === 0 || state.length - n < state.highWaterMark) {\n doRead = true;\n debug('length less than watermark', doRead);\n }\n\n // however, if we've ended, then there's no point, and if we're already\n // reading, then it's unnecessary.\n if (state.ended || state.reading) {\n doRead = false;\n debug('reading or ended', doRead);\n } else if (doRead) {\n debug('do read');\n state.reading = true;\n state.sync = true;\n // if the length is currently zero, then we *need* a readable event.\n if (state.length === 0) state.needReadable = true;\n // call internal read method\n this._read(state.highWaterMark);\n state.sync = false;\n // If _read pushed data synchronously, then `reading` will be false,\n // and we need to re-evaluate how much data we can return to the user.\n if (!state.reading) n = howMuchToRead(nOrig, state);\n }\n\n var ret;\n if (n > 0) ret = fromList(n, state);else ret = null;\n\n if (ret === null) {\n state.needReadable = true;\n n = 0;\n } else {\n state.length -= n;\n }\n\n if (state.length === 0) {\n // If we have nothing in the buffer, then we want to know\n // as soon as we *do* get something into the buffer.\n if (!state.ended) state.needReadable = true;\n\n // If we tried to read() past the EOF, then emit end on the next tick.\n if (nOrig !== n && state.ended) endReadable(this);\n }\n\n if (ret !== null) this.emit('data', ret);\n\n return ret;\n};\n\nfunction onEofChunk(stream, state) {\n if (state.ended) return;\n if (state.decoder) {\n var chunk = state.decoder.end();\n if (chunk && chunk.length) {\n state.buffer.push(chunk);\n state.length += state.objectMode ? 1 : chunk.length;\n }\n }\n state.ended = true;\n\n // emit 'readable' now to make sure it gets picked up.\n emitReadable(stream);\n}\n\n// Don't emit readable right away in sync mode, because this can trigger\n// another read() call => stack overflow. This way, it might trigger\n// a nextTick recursion warning, but that's not so bad.\nfunction emitReadable(stream) {\n var state = stream._readableState;\n state.needReadable = false;\n if (!state.emittedReadable) {\n debug('emitReadable', state.flowing);\n state.emittedReadable = true;\n if (state.sync) pna.nextTick(emitReadable_, stream);else emitReadable_(stream);\n }\n}\n\nfunction emitReadable_(stream) {\n debug('emit readable');\n stream.emit('readable');\n flow(stream);\n}\n\n// at this point, the user has presumably seen the 'readable' event,\n// and called read() to consume some data. that may have triggered\n// in turn another _read(n) call, in which case reading = true if\n// it's in progress.\n// However, if we're not ended, or reading, and the length < hwm,\n// then go ahead and try to read some more preemptively.\nfunction maybeReadMore(stream, state) {\n if (!state.readingMore) {\n state.readingMore = true;\n pna.nextTick(maybeReadMore_, stream, state);\n }\n}\n\nfunction maybeReadMore_(stream, state) {\n var len = state.length;\n while (!state.reading && !state.flowing && !state.ended && state.length < state.highWaterMark) {\n debug('maybeReadMore read 0');\n stream.read(0);\n if (len === state.length)\n // didn't get any data, stop spinning.\n break;else len = state.length;\n }\n state.readingMore = false;\n}\n\n// abstract method. to be overridden in specific implementation classes.\n// call cb(er, data) where data is <= n in length.\n// for virtual (non-string, non-buffer) streams, \"length\" is somewhat\n// arbitrary, and perhaps not very meaningful.\nReadable.prototype._read = function (n) {\n this.emit('error', new Error('_read() is not implemented'));\n};\n\nReadable.prototype.pipe = function (dest, pipeOpts) {\n var src = this;\n var state = this._readableState;\n\n switch (state.pipesCount) {\n case 0:\n state.pipes = dest;\n break;\n case 1:\n state.pipes = [state.pipes, dest];\n break;\n default:\n state.pipes.push(dest);\n break;\n }\n state.pipesCount += 1;\n debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts);\n\n var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr;\n\n var endFn = doEnd ? onend : unpipe;\n if (state.endEmitted) pna.nextTick(endFn);else src.once('end', endFn);\n\n dest.on('unpipe', onunpipe);\n function onunpipe(readable, unpipeInfo) {\n debug('onunpipe');\n if (readable === src) {\n if (unpipeInfo && unpipeInfo.hasUnpiped === false) {\n unpipeInfo.hasUnpiped = true;\n cleanup();\n }\n }\n }\n\n function onend() {\n debug('onend');\n dest.end();\n }\n\n // when the dest drains, it reduces the awaitDrain counter\n // on the source. This would be more elegant with a .once()\n // handler in flow(), but adding and removing repeatedly is\n // too slow.\n var ondrain = pipeOnDrain(src);\n dest.on('drain', ondrain);\n\n var cleanedUp = false;\n function cleanup() {\n debug('cleanup');\n // cleanup event handlers once the pipe is broken\n dest.removeListener('close', onclose);\n dest.removeListener('finish', onfinish);\n dest.removeListener('drain', ondrain);\n dest.removeListener('error', onerror);\n dest.removeListener('unpipe', onunpipe);\n src.removeListener('end', onend);\n src.removeListener('end', unpipe);\n src.removeListener('data', ondata);\n\n cleanedUp = true;\n\n // if the reader is waiting for a drain event from this\n // specific writer, then it would cause it to never start\n // flowing again.\n // So, if this is awaiting a drain, then we just call it now.\n // If we don't know, then assume that we are waiting for one.\n if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain();\n }\n\n // If the user pushes more data while we're writing to dest then we'll end up\n // in ondata again. However, we only want to increase awaitDrain once because\n // dest will only emit one 'drain' event for the multiple writes.\n // => Introduce a guard on increasing awaitDrain.\n var increasedAwaitDrain = false;\n src.on('data', ondata);\n function ondata(chunk) {\n debug('ondata');\n increasedAwaitDrain = false;\n var ret = dest.write(chunk);\n if (false === ret && !increasedAwaitDrain) {\n // If the user unpiped during `dest.write()`, it is possible\n // to get stuck in a permanently paused state if that write\n // also returned false.\n // => Check whether `dest` is still a piping destination.\n if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) {\n debug('false write response, pause', state.awaitDrain);\n state.awaitDrain++;\n increasedAwaitDrain = true;\n }\n src.pause();\n }\n }\n\n // if the dest has an error, then stop piping into it.\n // however, don't suppress the throwing behavior for this.\n function onerror(er) {\n debug('onerror', er);\n unpipe();\n dest.removeListener('error', onerror);\n if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er);\n }\n\n // Make sure our error handler is attached before userland ones.\n prependListener(dest, 'error', onerror);\n\n // Both close and finish should trigger unpipe, but only once.\n function onclose() {\n dest.removeListener('finish', onfinish);\n unpipe();\n }\n dest.once('close', onclose);\n function onfinish() {\n debug('onfinish');\n dest.removeListener('close', onclose);\n unpipe();\n }\n dest.once('finish', onfinish);\n\n function unpipe() {\n debug('unpipe');\n src.unpipe(dest);\n }\n\n // tell the dest that it's being piped to\n dest.emit('pipe', src);\n\n // start the flow if it hasn't been started already.\n if (!state.flowing) {\n debug('pipe resume');\n src.resume();\n }\n\n return dest;\n};\n\nfunction pipeOnDrain(src) {\n return function () {\n var state = src._readableState;\n debug('pipeOnDrain', state.awaitDrain);\n if (state.awaitDrain) state.awaitDrain--;\n if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) {\n state.flowing = true;\n flow(src);\n }\n };\n}\n\nReadable.prototype.unpipe = function (dest) {\n var state = this._readableState;\n var unpipeInfo = { hasUnpiped: false };\n\n // if we're not piping anywhere, then do nothing.\n if (state.pipesCount === 0) return this;\n\n // just one destination. most common case.\n if (state.pipesCount === 1) {\n // passed in one, but it's not the right one.\n if (dest && dest !== state.pipes) return this;\n\n if (!dest) dest = state.pipes;\n\n // got a match.\n state.pipes = null;\n state.pipesCount = 0;\n state.flowing = false;\n if (dest) dest.emit('unpipe', this, unpipeInfo);\n return this;\n }\n\n // slow case. multiple pipe destinations.\n\n if (!dest) {\n // remove all.\n var dests = state.pipes;\n var len = state.pipesCount;\n state.pipes = null;\n state.pipesCount = 0;\n state.flowing = false;\n\n for (var i = 0; i < len; i++) {\n dests[i].emit('unpipe', this, { hasUnpiped: false });\n }return this;\n }\n\n // try to find the right one.\n var index = indexOf(state.pipes, dest);\n if (index === -1) return this;\n\n state.pipes.splice(index, 1);\n state.pipesCount -= 1;\n if (state.pipesCount === 1) state.pipes = state.pipes[0];\n\n dest.emit('unpipe', this, unpipeInfo);\n\n return this;\n};\n\n// set up data events if they are asked for\n// Ensure readable listeners eventually get something\nReadable.prototype.on = function (ev, fn) {\n var res = Stream.prototype.on.call(this, ev, fn);\n\n if (ev === 'data') {\n // Start flowing on next tick if stream isn't explicitly paused\n if (this._readableState.flowing !== false) this.resume();\n } else if (ev === 'readable') {\n var state = this._readableState;\n if (!state.endEmitted && !state.readableListening) {\n state.readableListening = state.needReadable = true;\n state.emittedReadable = false;\n if (!state.reading) {\n pna.nextTick(nReadingNextTick, this);\n } else if (state.length) {\n emitReadable(this);\n }\n }\n }\n\n return res;\n};\nReadable.prototype.addListener = Readable.prototype.on;\n\nfunction nReadingNextTick(self) {\n debug('readable nexttick read 0');\n self.read(0);\n}\n\n// pause() and resume() are remnants of the legacy readable stream API\n// If the user uses them, then switch into old mode.\nReadable.prototype.resume = function () {\n var state = this._readableState;\n if (!state.flowing) {\n debug('resume');\n state.flowing = true;\n resume(this, state);\n }\n return this;\n};\n\nfunction resume(stream, state) {\n if (!state.resumeScheduled) {\n state.resumeScheduled = true;\n pna.nextTick(resume_, stream, state);\n }\n}\n\nfunction resume_(stream, state) {\n if (!state.reading) {\n debug('resume read 0');\n stream.read(0);\n }\n\n state.resumeScheduled = false;\n state.awaitDrain = 0;\n stream.emit('resume');\n flow(stream);\n if (state.flowing && !state.reading) stream.read(0);\n}\n\nReadable.prototype.pause = function () {\n debug('call pause flowing=%j', this._readableState.flowing);\n if (false !== this._readableState.flowing) {\n debug('pause');\n this._readableState.flowing = false;\n this.emit('pause');\n }\n return this;\n};\n\nfunction flow(stream) {\n var state = stream._readableState;\n debug('flow', state.flowing);\n while (state.flowing && stream.read() !== null) {}\n}\n\n// wrap an old-style stream as the async data source.\n// This is *not* part of the readable stream interface.\n// It is an ugly unfortunate mess of history.\nReadable.prototype.wrap = function (stream) {\n var _this = this;\n\n var state = this._readableState;\n var paused = false;\n\n stream.on('end', function () {\n debug('wrapped end');\n if (state.decoder && !state.ended) {\n var chunk = state.decoder.end();\n if (chunk && chunk.length) _this.push(chunk);\n }\n\n _this.push(null);\n });\n\n stream.on('data', function (chunk) {\n debug('wrapped data');\n if (state.decoder) chunk = state.decoder.write(chunk);\n\n // don't skip over falsy values in objectMode\n if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return;\n\n var ret = _this.push(chunk);\n if (!ret) {\n paused = true;\n stream.pause();\n }\n });\n\n // proxy all the other methods.\n // important when wrapping filters and duplexes.\n for (var i in stream) {\n if (this[i] === undefined && typeof stream[i] === 'function') {\n this[i] = function (method) {\n return function () {\n return stream[method].apply(stream, arguments);\n };\n }(i);\n }\n }\n\n // proxy certain important events.\n for (var n = 0; n < kProxyEvents.length; n++) {\n stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n]));\n }\n\n // when we try to consume some more bytes, simply unpause the\n // underlying stream.\n this._read = function (n) {\n debug('wrapped _read', n);\n if (paused) {\n paused = false;\n stream.resume();\n }\n };\n\n return this;\n};\n\nObject.defineProperty(Readable.prototype, 'readableHighWaterMark', {\n // making it explicit this property is not enumerable\n // because otherwise some prototype manipulation in\n // userland will fail\n enumerable: false,\n get: function () {\n return this._readableState.highWaterMark;\n }\n});\n\n// exposed for testing purposes only.\nReadable._fromList = fromList;\n\n// Pluck off n bytes from an array of buffers.\n// Length is the combined lengths of all the buffers in the list.\n// This function is designed to be inlinable, so please take care when making\n// changes to the function body.\nfunction fromList(n, state) {\n // nothing buffered\n if (state.length === 0) return null;\n\n var ret;\n if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) {\n // read it all, truncate the list\n if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.head.data;else ret = state.buffer.concat(state.length);\n state.buffer.clear();\n } else {\n // read part of list\n ret = fromListPartial(n, state.buffer, state.decoder);\n }\n\n return ret;\n}\n\n// Extracts only enough buffered data to satisfy the amount requested.\n// This function is designed to be inlinable, so please take care when making\n// changes to the function body.\nfunction fromListPartial(n, list, hasStrings) {\n var ret;\n if (n < list.head.data.length) {\n // slice is the same for buffers and strings\n ret = list.head.data.slice(0, n);\n list.head.data = list.head.data.slice(n);\n } else if (n === list.head.data.length) {\n // first chunk is a perfect match\n ret = list.shift();\n } else {\n // result spans more than one buffer\n ret = hasStrings ? copyFromBufferString(n, list) : copyFromBuffer(n, list);\n }\n return ret;\n}\n\n// Copies a specified amount of characters from the list of buffered data\n// chunks.\n// This function is designed to be inlinable, so please take care when making\n// changes to the function body.\nfunction copyFromBufferString(n, list) {\n var p = list.head;\n var c = 1;\n var ret = p.data;\n n -= ret.length;\n while (p = p.next) {\n var str = p.data;\n var nb = n > str.length ? str.length : n;\n if (nb === str.length) ret += str;else ret += str.slice(0, n);\n n -= nb;\n if (n === 0) {\n if (nb === str.length) {\n ++c;\n if (p.next) list.head = p.next;else list.head = list.tail = null;\n } else {\n list.head = p;\n p.data = str.slice(nb);\n }\n break;\n }\n ++c;\n }\n list.length -= c;\n return ret;\n}\n\n// Copies a specified amount of bytes from the list of buffered data chunks.\n// This function is designed to be inlinable, so please take care when making\n// changes to the function body.\nfunction copyFromBuffer(n, list) {\n var ret = Buffer.allocUnsafe(n);\n var p = list.head;\n var c = 1;\n p.data.copy(ret);\n n -= p.data.length;\n while (p = p.next) {\n var buf = p.data;\n var nb = n > buf.length ? buf.length : n;\n buf.copy(ret, ret.length - n, 0, nb);\n n -= nb;\n if (n === 0) {\n if (nb === buf.length) {\n ++c;\n if (p.next) list.head = p.next;else list.head = list.tail = null;\n } else {\n list.head = p;\n p.data = buf.slice(nb);\n }\n break;\n }\n ++c;\n }\n list.length -= c;\n return ret;\n}\n\nfunction endReadable(stream) {\n var state = stream._readableState;\n\n // If we get here before consuming all the bytes, then that is a\n // bug in node. Should never happen.\n if (state.length > 0) throw new Error('\"endReadable()\" called on non-empty stream');\n\n if (!state.endEmitted) {\n state.ended = true;\n pna.nextTick(endReadableNT, state, stream);\n }\n}\n\nfunction endReadableNT(state, stream) {\n // Check that we didn't get one last unshift.\n if (!state.endEmitted && state.length === 0) {\n state.endEmitted = true;\n stream.readable = false;\n stream.emit('end');\n }\n}\n\nfunction indexOf(xs, x) {\n for (var i = 0, l = xs.length; i < l; i++) {\n if (xs[i] === x) return i;\n }\n return -1;\n}","var toString = {}.toString;\n\nmodule.exports = Array.isArray || function (arr) {\n return toString.call(arr) == '[object Array]';\n};\n","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n// a passthrough stream.\n// basically just the most minimal sort of Transform stream.\n// Every written chunk gets output as-is.\n\n'use strict';\n\nmodule.exports = PassThrough;\n\nvar Transform = require('./_stream_transform');\n\n/*<replacement>*/\nvar util = Object.create(require('core-util-is'));\nutil.inherits = require('inherits');\n/*</replacement>*/\n\nutil.inherits(PassThrough, Transform);\n\nfunction PassThrough(options) {\n if (!(this instanceof PassThrough)) return new PassThrough(options);\n\n Transform.call(this, options);\n}\n\nPassThrough.prototype._transform = function (chunk, encoding, cb) {\n cb(null, chunk);\n};","exports = module.exports = require('./lib/_stream_readable.js');\nexports.Stream = exports;\nexports.Readable = exports;\nexports.Writable = require('./lib/_stream_writable.js');\nexports.Duplex = require('./lib/_stream_duplex.js');\nexports.Transform = require('./lib/_stream_transform.js');\nexports.PassThrough = require('./lib/_stream_passthrough.js');\n","module.exports = require('events').EventEmitter;\n","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n// a transform stream is a readable/writable stream where you do\n// something with the data. Sometimes it's called a \"filter\",\n// but that's not a great name for it, since that implies a thing where\n// some bits pass through, and others are simply ignored. (That would\n// be a valid example of a transform, of course.)\n//\n// While the output is causally related to the input, it's not a\n// necessarily symmetric or synchronous transformation. For example,\n// a zlib stream might take multiple plain-text writes(), and then\n// emit a single compressed chunk some time in the future.\n//\n// Here's how this works:\n//\n// The Transform stream has all the aspects of the readable and writable\n// stream classes. When you write(chunk), that calls _write(chunk,cb)\n// internally, and returns false if there's a lot of pending writes\n// buffered up. When you call read(), that calls _read(n) until\n// there's enough pending readable data buffered up.\n//\n// In a transform stream, the written data is placed in a buffer. When\n// _read(n) is called, it transforms the queued up data, calling the\n// buffered _write cb's as it consumes chunks. If consuming a single\n// written chunk would result in multiple output chunks, then the first\n// outputted bit calls the readcb, and subsequent chunks just go into\n// the read buffer, and will cause it to emit 'readable' if necessary.\n//\n// This way, back-pressure is actually determined by the reading side,\n// since _read has to be called to start processing a new chunk. However,\n// a pathological inflate type of transform can cause excessive buffering\n// here. For example, imagine a stream where every byte of input is\n// interpreted as an integer from 0-255, and then results in that many\n// bytes of output. Writing the 4 bytes {ff,ff,ff,ff} would result in\n// 1kb of data being output. In this case, you could write a very small\n// amount of input, and end up with a very large amount of output. In\n// such a pathological inflating mechanism, there'd be no way to tell\n// the system to stop doing the transform. A single 4MB write could\n// cause the system to run out of memory.\n//\n// However, even in such a pathological case, only a single written chunk\n// would be consumed, and then the rest would wait (un-transformed) until\n// the results of the previous transformed chunk were consumed.\n\n'use strict';\n\nmodule.exports = Transform;\n\nvar Duplex = require('./_stream_duplex');\n\n/*<replacement>*/\nvar util = Object.create(require('core-util-is'));\nutil.inherits = require('inherits');\n/*</replacement>*/\n\nutil.inherits(Transform, Duplex);\n\nfunction afterTransform(er, data) {\n var ts = this._transformState;\n ts.transforming = false;\n\n var cb = ts.writecb;\n\n if (!cb) {\n return this.emit('error', new Error('write callback called multiple times'));\n }\n\n ts.writechunk = null;\n ts.writecb = null;\n\n if (data != null) // single equals check for both `null` and `undefined`\n this.push(data);\n\n cb(er);\n\n var rs = this._readableState;\n rs.reading = false;\n if (rs.needReadable || rs.length < rs.highWaterMark) {\n this._read(rs.highWaterMark);\n }\n}\n\nfunction Transform(options) {\n if (!(this instanceof Transform)) return new Transform(options);\n\n Duplex.call(this, options);\n\n this._transformState = {\n afterTransform: afterTransform.bind(this),\n needTransform: false,\n transforming: false,\n writecb: null,\n writechunk: null,\n writeencoding: null\n };\n\n // start out asking for a readable event once data is transformed.\n this._readableState.needReadable = true;\n\n // we have implemented the _read method, and done the other things\n // that Readable wants before the first _read call, so unset the\n // sync guard flag.\n this._readableState.sync = false;\n\n if (options) {\n if (typeof options.transform === 'function') this._transform = options.transform;\n\n if (typeof options.flush === 'function') this._flush = options.flush;\n }\n\n // When the writable side finishes, then flush out anything remaining.\n this.on('prefinish', prefinish);\n}\n\nfunction prefinish() {\n var _this = this;\n\n if (typeof this._flush === 'function') {\n this._flush(function (er, data) {\n done(_this, er, data);\n });\n } else {\n done(this, null, null);\n }\n}\n\nTransform.prototype.push = function (chunk, encoding) {\n this._transformState.needTransform = false;\n return Duplex.prototype.push.call(this, chunk, encoding);\n};\n\n// This is the part where you do stuff!\n// override this function in implementation classes.\n// 'chunk' is an input chunk.\n//\n// Call `push(newChunk)` to pass along transformed output\n// to the readable side. You may call 'push' zero or more times.\n//\n// Call `cb(err)` when you are done with this chunk. If you pass\n// an error, then that'll put the hurt on the whole operation. If you\n// never call cb(), then you'll never get another chunk.\nTransform.prototype._transform = function (chunk, encoding, cb) {\n throw new Error('_transform() is not implemented');\n};\n\nTransform.prototype._write = function (chunk, encoding, cb) {\n var ts = this._transformState;\n ts.writecb = cb;\n ts.writechunk = chunk;\n ts.writeencoding = encoding;\n if (!ts.transforming) {\n var rs = this._readableState;\n if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);\n }\n};\n\n// Doesn't matter what the args are here.\n// _transform does all the work.\n// That we got here means that the readable side wants more data.\nTransform.prototype._read = function (n) {\n var ts = this._transformState;\n\n if (ts.writechunk !== null && ts.writecb && !ts.transforming) {\n ts.transforming = true;\n this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);\n } else {\n // mark that we need a transform, so that any data that comes in\n // will get processed, now that we've asked for it.\n ts.needTransform = true;\n }\n};\n\nTransform.prototype._destroy = function (err, cb) {\n var _this2 = this;\n\n Duplex.prototype._destroy.call(this, err, function (err2) {\n cb(err2);\n _this2.emit('close');\n });\n};\n\nfunction done(stream, er, data) {\n if (er) return stream.emit('error', er);\n\n if (data != null) // single equals check for both `null` and `undefined`\n stream.push(data);\n\n // if there's nothing in the write buffer, then that means\n // that nothing more will ever be provided\n if (stream._writableState.length) throw new Error('Calling transform done when ws.length != 0');\n\n if (stream._transformState.transforming) throw new Error('Calling transform done when still transforming');\n\n return stream.push(null);\n}","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n// a duplex stream is just a stream that is both readable and writable.\n// Since JS doesn't have multiple prototypal inheritance, this class\n// prototypally inherits from Readable, and then parasitically from\n// Writable.\n\n'use strict';\n\n/*<replacement>*/\n\nvar pna = require('process-nextick-args');\n/*</replacement>*/\n\n/*<replacement>*/\nvar objectKeys = Object.keys || function (obj) {\n var keys = [];\n for (var key in obj) {\n keys.push(key);\n }return keys;\n};\n/*</replacement>*/\n\nmodule.exports = Duplex;\n\n/*<replacement>*/\nvar util = Object.create(require('core-util-is'));\nutil.inherits = require('inherits');\n/*</replacement>*/\n\nvar Readable = require('./_stream_readable');\nvar Writable = require('./_stream_writable');\n\nutil.inherits(Duplex, Readable);\n\n{\n // avoid scope creep, the keys array can then be collected\n var keys = objectKeys(Writable.prototype);\n for (var v = 0; v < keys.length; v++) {\n var method = keys[v];\n if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];\n }\n}\n\nfunction Duplex(options) {\n if (!(this instanceof Duplex)) return new Duplex(options);\n\n Readable.call(this, options);\n Writable.call(this, options);\n\n if (options && options.readable === false) this.readable = false;\n\n if (options && options.writable === false) this.writable = false;\n\n this.allowHalfOpen = true;\n if (options && options.allowHalfOpen === false) this.allowHalfOpen = false;\n\n this.once('end', onend);\n}\n\nObject.defineProperty(Duplex.prototype, 'writableHighWaterMark', {\n // making it explicit this property is not enumerable\n // because otherwise some prototype manipulation in\n // userland will fail\n enumerable: false,\n get: function () {\n return this._writableState.highWaterMark;\n }\n});\n\n// the no-half-open enforcer\nfunction onend() {\n // if we allow half-open state, or if the writable side ended,\n // then we're ok.\n if (this.allowHalfOpen || this._writableState.ended) return;\n\n // no more data can be written.\n // But allow more writes to happen in this tick.\n pna.nextTick(onEndNT, this);\n}\n\nfunction onEndNT(self) {\n self.end();\n}\n\nObject.defineProperty(Duplex.prototype, 'destroyed', {\n get: function () {\n if (this._readableState === undefined || this._writableState === undefined) {\n return false;\n }\n return this._readableState.destroyed && this._writableState.destroyed;\n },\n set: function (value) {\n // we ignore the value if the stream\n // has not been initialized yet\n if (this._readableState === undefined || this._writableState === undefined) {\n return;\n }\n\n // backward compatibility, the user is explicitly\n // managing destroyed\n this._readableState.destroyed = value;\n this._writableState.destroyed = value;\n }\n});\n\nDuplex.prototype._destroy = function (err, cb) {\n this.push(null);\n this.end();\n\n pna.nextTick(cb, err);\n};","'use strict';\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nvar Buffer = require('safe-buffer').Buffer;\nvar util = require('util');\n\nfunction copyBuffer(src, target, offset) {\n src.copy(target, offset);\n}\n\nmodule.exports = function () {\n function BufferList() {\n _classCallCheck(this, BufferList);\n\n this.head = null;\n this.tail = null;\n this.length = 0;\n }\n\n BufferList.prototype.push = function push(v) {\n var entry = { data: v, next: null };\n if (this.length > 0) this.tail.next = entry;else this.head = entry;\n this.tail = entry;\n ++this.length;\n };\n\n BufferList.prototype.unshift = function unshift(v) {\n var entry = { data: v, next: this.head };\n if (this.length === 0) this.tail = entry;\n this.head = entry;\n ++this.length;\n };\n\n BufferList.prototype.shift = function shift() {\n if (this.length === 0) return;\n var ret = this.head.data;\n if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;\n --this.length;\n return ret;\n };\n\n BufferList.prototype.clear = function clear() {\n this.head = this.tail = null;\n this.length = 0;\n };\n\n BufferList.prototype.join = function join(s) {\n if (this.length === 0) return '';\n var p = this.head;\n var ret = '' + p.data;\n while (p = p.next) {\n ret += s + p.data;\n }return ret;\n };\n\n BufferList.prototype.concat = function concat(n) {\n if (this.length === 0) return Buffer.alloc(0);\n var ret = Buffer.allocUnsafe(n >>> 0);\n var p = this.head;\n var i = 0;\n while (p) {\n copyBuffer(p.data, ret, i);\n i += p.data.length;\n p = p.next;\n }\n return ret;\n };\n\n return BufferList;\n}();\n\nif (util && util.inspect && util.inspect.custom) {\n module.exports.prototype[util.inspect.custom] = function () {\n var obj = util.inspect({ length: this.length });\n return this.constructor.name + ' ' + obj;\n };\n}","'use strict';\n\n/*<replacement>*/\n\nvar pna = require('process-nextick-args');\n/*</replacement>*/\n\n// undocumented cb() API, needed for core, not for public API\nfunction destroy(err, cb) {\n var _this = this;\n\n var readableDestroyed = this._readableState && this._readableState.destroyed;\n var writableDestroyed = this._writableState && this._writableState.destroyed;\n\n if (readableDestroyed || writableDestroyed) {\n if (cb) {\n cb(err);\n } else if (err) {\n if (!this._writableState) {\n pna.nextTick(emitErrorNT, this, err);\n } else if (!this._writableState.errorEmitted) {\n this._writableState.errorEmitted = true;\n pna.nextTick(emitErrorNT, this, err);\n }\n }\n\n return this;\n }\n\n // we set destroyed to true before firing error callbacks in order\n // to make it re-entrance safe in case destroy() is called within callbacks\n\n if (this._readableState) {\n this._readableState.destroyed = true;\n }\n\n // if this is a duplex stream mark the writable part as destroyed as well\n if (this._writableState) {\n this._writableState.destroyed = true;\n }\n\n this._destroy(err || null, function (err) {\n if (!cb && err) {\n if (!_this._writableState) {\n pna.nextTick(emitErrorNT, _this, err);\n } else if (!_this._writableState.errorEmitted) {\n _this._writableState.errorEmitted = true;\n pna.nextTick(emitErrorNT, _this, err);\n }\n } else if (cb) {\n cb(err);\n }\n });\n\n return this;\n}\n\nfunction undestroy() {\n if (this._readableState) {\n this._readableState.destroyed = false;\n this._readableState.reading = false;\n this._readableState.ended = false;\n this._readableState.endEmitted = false;\n }\n\n if (this._writableState) {\n this._writableState.destroyed = false;\n this._writableState.ended = false;\n this._writableState.ending = false;\n this._writableState.finalCalled = false;\n this._writableState.prefinished = false;\n this._writableState.finished = false;\n this._writableState.errorEmitted = false;\n }\n}\n\nfunction emitErrorNT(self, err) {\n self.emit('error', err);\n}\n\nmodule.exports = {\n destroy: destroy,\n undestroy: undestroy\n};","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n// A bit simpler than readable streams.\n// Implement an async ._write(chunk, encoding, cb), and it'll handle all\n// the drain event emission and buffering.\n\n'use strict';\n\n/*<replacement>*/\n\nvar pna = require('process-nextick-args');\n/*</replacement>*/\n\nmodule.exports = Writable;\n\n/* <replacement> */\nfunction WriteReq(chunk, encoding, cb) {\n this.chunk = chunk;\n this.encoding = encoding;\n this.callback = cb;\n this.next = null;\n}\n\n// It seems a linked list but it is not\n// there will be only 2 of these for each stream\nfunction CorkedRequest(state) {\n var _this = this;\n\n this.next = null;\n this.entry = null;\n this.finish = function () {\n onCorkedFinish(_this, state);\n };\n}\n/* </replacement> */\n\n/*<replacement>*/\nvar asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : pna.nextTick;\n/*</replacement>*/\n\n/*<replacement>*/\nvar Duplex;\n/*</replacement>*/\n\nWritable.WritableState = WritableState;\n\n/*<replacement>*/\nvar util = Object.create(require('core-util-is'));\nutil.inherits = require('inherits');\n/*</replacement>*/\n\n/*<replacement>*/\nvar internalUtil = {\n deprecate: require('util-deprecate')\n};\n/*</replacement>*/\n\n/*<replacement>*/\nvar Stream = require('./internal/streams/stream');\n/*</replacement>*/\n\n/*<replacement>*/\n\nvar Buffer = require('safe-buffer').Buffer;\nvar OurUint8Array = (typeof global !== 'undefined' ? global : typeof window !== 'undefined' ? window : typeof self !== 'undefined' ? self : {}).Uint8Array || function () {};\nfunction _uint8ArrayToBuffer(chunk) {\n return Buffer.from(chunk);\n}\nfunction _isUint8Array(obj) {\n return Buffer.isBuffer(obj) || obj instanceof OurUint8Array;\n}\n\n/*</replacement>*/\n\nvar destroyImpl = require('./internal/streams/destroy');\n\nutil.inherits(Writable, Stream);\n\nfunction nop() {}\n\nfunction WritableState(options, stream) {\n Duplex = Duplex || require('./_stream_duplex');\n\n options = options || {};\n\n // Duplex streams are both readable and writable, but share\n // the same options object.\n // However, some cases require setting options to different\n // values for the readable and the writable sides of the duplex stream.\n // These options can be provided separately as readableXXX and writableXXX.\n var isDuplex = stream instanceof Duplex;\n\n // object stream flag to indicate whether or not this stream\n // contains buffers or objects.\n this.objectMode = !!options.objectMode;\n\n if (isDuplex) this.objectMode = this.objectMode || !!options.writableObjectMode;\n\n // the point at which write() starts returning false\n // Note: 0 is a valid value, means that we always return false if\n // the entire buffer is not flushed immediately on write()\n var hwm = options.highWaterMark;\n var writableHwm = options.writableHighWaterMark;\n var defaultHwm = this.objectMode ? 16 : 16 * 1024;\n\n if (hwm || hwm === 0) this.highWaterMark = hwm;else if (isDuplex && (writableHwm || writableHwm === 0)) this.highWaterMark = writableHwm;else this.highWaterMark = defaultHwm;\n\n // cast to ints.\n this.highWaterMark = Math.floor(this.highWaterMark);\n\n // if _final has been called\n this.finalCalled = false;\n\n // drain event flag.\n this.needDrain = false;\n // at the start of calling end()\n this.ending = false;\n // when end() has been called, and returned\n this.ended = false;\n // when 'finish' is emitted\n this.finished = false;\n\n // has it been destroyed\n this.destroyed = false;\n\n // should we decode strings into buffers before passing to _write?\n // this is here so that some node-core streams can optimize string\n // handling at a lower level.\n var noDecode = options.decodeStrings === false;\n this.decodeStrings = !noDecode;\n\n // Crypto is kind of old and crusty. Historically, its default string\n // encoding is 'binary' so we have to make this configurable.\n // Everything else in the universe uses 'utf8', though.\n this.defaultEncoding = options.defaultEncoding || 'utf8';\n\n // not an actual buffer we keep track of, but a measurement\n // of how much we're waiting to get pushed to some underlying\n // socket or file.\n this.length = 0;\n\n // a flag to see when we're in the middle of a write.\n this.writing = false;\n\n // when true all writes will be buffered until .uncork() call\n this.corked = 0;\n\n // a flag to be able to tell if the onwrite cb is called immediately,\n // or on a later tick. We set this to true at first, because any\n // actions that shouldn't happen until \"later\" should generally also\n // not happen before the first write call.\n this.sync = true;\n\n // a flag to know if we're processing previously buffered items, which\n // may call the _write() callback in the same tick, so that we don't\n // end up in an overlapped onwrite situation.\n this.bufferProcessing = false;\n\n // the callback that's passed to _write(chunk,cb)\n this.onwrite = function (er) {\n onwrite(stream, er);\n };\n\n // the callback that the user supplies to write(chunk,encoding,cb)\n this.writecb = null;\n\n // the amount that is being written when _write is called.\n this.writelen = 0;\n\n this.bufferedRequest = null;\n this.lastBufferedRequest = null;\n\n // number of pending user-supplied write callbacks\n // this must be 0 before 'finish' can be emitted\n this.pendingcb = 0;\n\n // emit prefinish if the only thing we're waiting for is _write cbs\n // This is relevant for synchronous Transform streams\n this.prefinished = false;\n\n // True if the error was already emitted and should not be thrown again\n this.errorEmitted = false;\n\n // count buffered requests\n this.bufferedRequestCount = 0;\n\n // allocate the first CorkedRequest, there is always\n // one allocated and free to use, and we maintain at most two\n this.corkedRequestsFree = new CorkedRequest(this);\n}\n\nWritableState.prototype.getBuffer = function getBuffer() {\n var current = this.bufferedRequest;\n var out = [];\n while (current) {\n out.push(current);\n current = current.next;\n }\n return out;\n};\n\n(function () {\n try {\n Object.defineProperty(WritableState.prototype, 'buffer', {\n get: internalUtil.deprecate(function () {\n return this.getBuffer();\n }, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')\n });\n } catch (_) {}\n})();\n\n// Test _writableState for inheritance to account for Duplex streams,\n// whose prototype chain only points to Readable.\nvar realHasInstance;\nif (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') {\n realHasInstance = Function.prototype[Symbol.hasInstance];\n Object.defineProperty(Writable, Symbol.hasInstance, {\n value: function (object) {\n if (realHasInstance.call(this, object)) return true;\n if (this !== Writable) return false;\n\n return object && object._writableState instanceof WritableState;\n }\n });\n} else {\n realHasInstance = function (object) {\n return object instanceof this;\n };\n}\n\nfunction Writable(options) {\n Duplex = Duplex || require('./_stream_duplex');\n\n // Writable ctor is applied to Duplexes, too.\n // `realHasInstance` is necessary because using plain `instanceof`\n // would return false, as no `_writableState` property is attached.\n\n // Trying to use the custom `instanceof` for Writable here will also break the\n // Node.js LazyTransform implementation, which has a non-trivial getter for\n // `_writableState` that would lead to infinite recursion.\n if (!realHasInstance.call(Writable, this) && !(this instanceof Duplex)) {\n return new Writable(options);\n }\n\n this._writableState = new WritableState(options, this);\n\n // legacy.\n this.writable = true;\n\n if (options) {\n if (typeof options.write === 'function') this._write = options.write;\n\n if (typeof options.writev === 'function') this._writev = options.writev;\n\n if (typeof options.destroy === 'function') this._destroy = options.destroy;\n\n if (typeof options.final === 'function') this._final = options.final;\n }\n\n Stream.call(this);\n}\n\n// Otherwise people can pipe Writable streams, which is just wrong.\nWritable.prototype.pipe = function () {\n this.emit('error', new Error('Cannot pipe, not readable'));\n};\n\nfunction writeAfterEnd(stream, cb) {\n var er = new Error('write after end');\n // TODO: defer error events consistently everywhere, not just the cb\n stream.emit('error', er);\n pna.nextTick(cb, er);\n}\n\n// Checks that a user-supplied chunk is valid, especially for the particular\n// mode the stream is in. Currently this means that `null` is never accepted\n// and undefined/non-string values are only allowed in object mode.\nfunction validChunk(stream, state, chunk, cb) {\n var valid = true;\n var er = false;\n\n if (chunk === null) {\n er = new TypeError('May not write null values to stream');\n } else if (typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {\n er = new TypeError('Invalid non-string/buffer chunk');\n }\n if (er) {\n stream.emit('error', er);\n pna.nextTick(cb, er);\n valid = false;\n }\n return valid;\n}\n\nWritable.prototype.write = function (chunk, encoding, cb) {\n var state = this._writableState;\n var ret = false;\n var isBuf = !state.objectMode && _isUint8Array(chunk);\n\n if (isBuf && !Buffer.isBuffer(chunk)) {\n chunk = _uint8ArrayToBuffer(chunk);\n }\n\n if (typeof encoding === 'function') {\n cb = encoding;\n encoding = null;\n }\n\n if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding;\n\n if (typeof cb !== 'function') cb = nop;\n\n if (state.ended) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) {\n state.pendingcb++;\n ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb);\n }\n\n return ret;\n};\n\nWritable.prototype.cork = function () {\n var state = this._writableState;\n\n state.corked++;\n};\n\nWritable.prototype.uncork = function () {\n var state = this._writableState;\n\n if (state.corked) {\n state.corked--;\n\n if (!state.writing && !state.corked && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state);\n }\n};\n\nWritable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) {\n // node::ParseEncoding() requires lower case.\n if (typeof encoding === 'string') encoding = encoding.toLowerCase();\n if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new TypeError('Unknown encoding: ' + encoding);\n this._writableState.defaultEncoding = encoding;\n return this;\n};\n\nfunction decodeChunk(state, chunk, encoding) {\n if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') {\n chunk = Buffer.from(chunk, encoding);\n }\n return chunk;\n}\n\nObject.defineProperty(Writable.prototype, 'writableHighWaterMark', {\n // making it explicit this property is not enumerable\n // because otherwise some prototype manipulation in\n // userland will fail\n enumerable: false,\n get: function () {\n return this._writableState.highWaterMark;\n }\n});\n\n// if we're already writing something, then just put this\n// in the queue, and wait our turn. Otherwise, call _write\n// If we return false, then we need a drain event, so set that flag.\nfunction writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) {\n if (!isBuf) {\n var newChunk = decodeChunk(state, chunk, encoding);\n if (chunk !== newChunk) {\n isBuf = true;\n encoding = 'buffer';\n chunk = newChunk;\n }\n }\n var len = state.objectMode ? 1 : chunk.length;\n\n state.length += len;\n\n var ret = state.length < state.highWaterMark;\n // we must ensure that previous needDrain will not be reset to false.\n if (!ret) state.needDrain = true;\n\n if (state.writing || state.corked) {\n var last = state.lastBufferedRequest;\n state.lastBufferedRequest = {\n chunk: chunk,\n encoding: encoding,\n isBuf: isBuf,\n callback: cb,\n next: null\n };\n if (last) {\n last.next = state.lastBufferedRequest;\n } else {\n state.bufferedRequest = state.lastBufferedRequest;\n }\n state.bufferedRequestCount += 1;\n } else {\n doWrite(stream, state, false, len, chunk, encoding, cb);\n }\n\n return ret;\n}\n\nfunction doWrite(stream, state, writev, len, chunk, encoding, cb) {\n state.writelen = len;\n state.writecb = cb;\n state.writing = true;\n state.sync = true;\n if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite);\n state.sync = false;\n}\n\nfunction onwriteError(stream, state, sync, er, cb) {\n --state.pendingcb;\n\n if (sync) {\n // defer the callback if we are being called synchronously\n // to avoid piling up things on the stack\n pna.nextTick(cb, er);\n // this can emit finish, and it will always happen\n // after error\n pna.nextTick(finishMaybe, stream, state);\n stream._writableState.errorEmitted = true;\n stream.emit('error', er);\n } else {\n // the caller expect this to happen before if\n // it is async\n cb(er);\n stream._writableState.errorEmitted = true;\n stream.emit('error', er);\n // this can emit finish, but finish must\n // always follow error\n finishMaybe(stream, state);\n }\n}\n\nfunction onwriteStateUpdate(state) {\n state.writing = false;\n state.writecb = null;\n state.length -= state.writelen;\n state.writelen = 0;\n}\n\nfunction onwrite(stream, er) {\n var state = stream._writableState;\n var sync = state.sync;\n var cb = state.writecb;\n\n onwriteStateUpdate(state);\n\n if (er) onwriteError(stream, state, sync, er, cb);else {\n // Check if we're actually ready to finish, but don't emit yet\n var finished = needFinish(state);\n\n if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) {\n clearBuffer(stream, state);\n }\n\n if (sync) {\n /*<replacement>*/\n asyncWrite(afterWrite, stream, state, finished, cb);\n /*</replacement>*/\n } else {\n afterWrite(stream, state, finished, cb);\n }\n }\n}\n\nfunction afterWrite(stream, state, finished, cb) {\n if (!finished) onwriteDrain(stream, state);\n state.pendingcb--;\n cb();\n finishMaybe(stream, state);\n}\n\n// Must force callback to be called on nextTick, so that we don't\n// emit 'drain' before the write() consumer gets the 'false' return\n// value, and has a chance to attach a 'drain' listener.\nfunction onwriteDrain(stream, state) {\n if (state.length === 0 && state.needDrain) {\n state.needDrain = false;\n stream.emit('drain');\n }\n}\n\n// if there's something in the buffer waiting, then process it\nfunction clearBuffer(stream, state) {\n state.bufferProcessing = true;\n var entry = state.bufferedRequest;\n\n if (stream._writev && entry && entry.next) {\n // Fast case, write everything using _writev()\n var l = state.bufferedRequestCount;\n var buffer = new Array(l);\n var holder = state.corkedRequestsFree;\n holder.entry = entry;\n\n var count = 0;\n var allBuffers = true;\n while (entry) {\n buffer[count] = entry;\n if (!entry.isBuf) allBuffers = false;\n entry = entry.next;\n count += 1;\n }\n buffer.allBuffers = allBuffers;\n\n doWrite(stream, state, true, state.length, buffer, '', holder.finish);\n\n // doWrite is almost always async, defer these to save a bit of time\n // as the hot path ends with doWrite\n state.pendingcb++;\n state.lastBufferedRequest = null;\n if (holder.next) {\n state.corkedRequestsFree = holder.next;\n holder.next = null;\n } else {\n state.corkedRequestsFree = new CorkedRequest(state);\n }\n state.bufferedRequestCount = 0;\n } else {\n // Slow case, write chunks one-by-one\n while (entry) {\n var chunk = entry.chunk;\n var encoding = entry.encoding;\n var cb = entry.callback;\n var len = state.objectMode ? 1 : chunk.length;\n\n doWrite(stream, state, false, len, chunk, encoding, cb);\n entry = entry.next;\n state.bufferedRequestCount--;\n // if we didn't call the onwrite immediately, then\n // it means that we need to wait until it does.\n // also, that means that the chunk and cb are currently\n // being processed, so move the buffer counter past them.\n if (state.writing) {\n break;\n }\n }\n\n if (entry === null) state.lastBufferedRequest = null;\n }\n\n state.bufferedRequest = entry;\n state.bufferProcessing = false;\n}\n\nWritable.prototype._write = function (chunk, encoding, cb) {\n cb(new Error('_write() is not implemented'));\n};\n\nWritable.prototype._writev = null;\n\nWritable.prototype.end = function (chunk, encoding, cb) {\n var state = this._writableState;\n\n if (typeof chunk === 'function') {\n cb = chunk;\n chunk = null;\n encoding = null;\n } else if (typeof encoding === 'function') {\n cb = encoding;\n encoding = null;\n }\n\n if (chunk !== null && chunk !== undefined) this.write(chunk, encoding);\n\n // .end() fully uncorks\n if (state.corked) {\n state.corked = 1;\n this.uncork();\n }\n\n // ignore unnecessary end() calls.\n if (!state.ending) endWritable(this, state, cb);\n};\n\nfunction needFinish(state) {\n return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing;\n}\nfunction callFinal(stream, state) {\n stream._final(function (err) {\n state.pendingcb--;\n if (err) {\n stream.emit('error', err);\n }\n state.prefinished = true;\n stream.emit('prefinish');\n finishMaybe(stream, state);\n });\n}\nfunction prefinish(stream, state) {\n if (!state.prefinished && !state.finalCalled) {\n if (typeof stream._final === 'function') {\n state.pendingcb++;\n state.finalCalled = true;\n pna.nextTick(callFinal, stream, state);\n } else {\n state.prefinished = true;\n stream.emit('prefinish');\n }\n }\n}\n\nfunction finishMaybe(stream, state) {\n var need = needFinish(state);\n if (need) {\n prefinish(stream, state);\n if (state.pendingcb === 0) {\n state.finished = true;\n stream.emit('finish');\n }\n }\n return need;\n}\n\nfunction endWritable(stream, state, cb) {\n state.ending = true;\n finishMaybe(stream, state);\n if (cb) {\n if (state.finished) pna.nextTick(cb);else stream.once('finish', cb);\n }\n state.ended = true;\n stream.writable = false;\n}\n\nfunction onCorkedFinish(corkReq, state, err) {\n var entry = corkReq.entry;\n corkReq.entry = null;\n while (entry) {\n var cb = entry.callback;\n state.pendingcb--;\n cb(err);\n entry = entry.next;\n }\n\n // reuse the free corkReq.\n state.corkedRequestsFree.next = corkReq;\n}\n\nObject.defineProperty(Writable.prototype, 'destroyed', {\n get: function () {\n if (this._writableState === undefined) {\n return false;\n }\n return this._writableState.destroyed;\n },\n set: function (value) {\n // we ignore the value if the stream\n // has not been initialized yet\n if (!this._writableState) {\n return;\n }\n\n // backward compatibility, the user is explicitly\n // managing destroyed\n this._writableState.destroyed = value;\n }\n});\n\nWritable.prototype.destroy = destroyImpl.destroy;\nWritable.prototype._undestroy = destroyImpl.undestroy;\nWritable.prototype._destroy = function (err, cb) {\n this.end();\n cb(err);\n};","// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n'use strict';\n\n/*<replacement>*/\n\nvar Buffer = require('safe-buffer').Buffer;\n/*</replacement>*/\n\nvar isEncoding = Buffer.isEncoding || function (encoding) {\n encoding = '' + encoding;\n switch (encoding && encoding.toLowerCase()) {\n case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw':\n return true;\n default:\n return false;\n }\n};\n\nfunction _normalizeEncoding(enc) {\n if (!enc) return 'utf8';\n var retried;\n while (true) {\n switch (enc) {\n case 'utf8':\n case 'utf-8':\n return 'utf8';\n case 'ucs2':\n case 'ucs-2':\n case 'utf16le':\n case 'utf-16le':\n return 'utf16le';\n case 'latin1':\n case 'binary':\n return 'latin1';\n case 'base64':\n case 'ascii':\n case 'hex':\n return enc;\n default:\n if (retried) return; // undefined\n enc = ('' + enc).toLowerCase();\n retried = true;\n }\n }\n};\n\n// Do not cache `Buffer.isEncoding` when checking encoding names as some\n// modules monkey-patch it to support additional encodings\nfunction normalizeEncoding(enc) {\n var nenc = _normalizeEncoding(enc);\n if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc);\n return nenc || enc;\n}\n\n// StringDecoder provides an interface for efficiently splitting a series of\n// buffers into a series of JS strings without breaking apart multi-byte\n// characters.\nexports.StringDecoder = StringDecoder;\nfunction StringDecoder(encoding) {\n this.encoding = normalizeEncoding(encoding);\n var nb;\n switch (this.encoding) {\n case 'utf16le':\n this.text = utf16Text;\n this.end = utf16End;\n nb = 4;\n break;\n case 'utf8':\n this.fillLast = utf8FillLast;\n nb = 4;\n break;\n case 'base64':\n this.text = base64Text;\n this.end = base64End;\n nb = 3;\n break;\n default:\n this.write = simpleWrite;\n this.end = simpleEnd;\n return;\n }\n this.lastNeed = 0;\n this.lastTotal = 0;\n this.lastChar = Buffer.allocUnsafe(nb);\n}\n\nStringDecoder.prototype.write = function (buf) {\n if (buf.length === 0) return '';\n var r;\n var i;\n if (this.lastNeed) {\n r = this.fillLast(buf);\n if (r === undefined) return '';\n i = this.lastNeed;\n this.lastNeed = 0;\n } else {\n i = 0;\n }\n if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i);\n return r || '';\n};\n\nStringDecoder.prototype.end = utf8End;\n\n// Returns only complete characters in a Buffer\nStringDecoder.prototype.text = utf8Text;\n\n// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer\nStringDecoder.prototype.fillLast = function (buf) {\n if (this.lastNeed <= buf.length) {\n buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed);\n return this.lastChar.toString(this.encoding, 0, this.lastTotal);\n }\n buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length);\n this.lastNeed -= buf.length;\n};\n\n// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a\n// continuation byte. If an invalid byte is detected, -2 is returned.\nfunction utf8CheckByte(byte) {\n if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4;\n return byte >> 6 === 0x02 ? -1 : -2;\n}\n\n// Checks at most 3 bytes at the end of a Buffer in order to detect an\n// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4)\n// needed to complete the UTF-8 character (if applicable) are returned.\nfunction utf8CheckIncomplete(self, buf, i) {\n var j = buf.length - 1;\n if (j < i) return 0;\n var nb = utf8CheckByte(buf[j]);\n if (nb >= 0) {\n if (nb > 0) self.lastNeed = nb - 1;\n return nb;\n }\n if (--j < i || nb === -2) return 0;\n nb = utf8CheckByte(buf[j]);\n if (nb >= 0) {\n if (nb > 0) self.lastNeed = nb - 2;\n return nb;\n }\n if (--j < i || nb === -2) return 0;\n nb = utf8CheckByte(buf[j]);\n if (nb >= 0) {\n if (nb > 0) {\n if (nb === 2) nb = 0;else self.lastNeed = nb - 3;\n }\n return nb;\n }\n return 0;\n}\n\n// Validates as many continuation bytes for a multi-byte UTF-8 character as\n// needed or are available. If we see a non-continuation byte where we expect\n// one, we \"replace\" the validated continuation bytes we've seen so far with\n// a single UTF-8 replacement character ('\\ufffd'), to match v8's UTF-8 decoding\n// behavior. The continuation byte check is included three times in the case\n// where all of the continuation bytes for a character exist in the same buffer.\n// It is also done this way as a slight performance increase instead of using a\n// loop.\nfunction utf8CheckExtraBytes(self, buf, p) {\n if ((buf[0] & 0xC0) !== 0x80) {\n self.lastNeed = 0;\n return '\\ufffd';\n }\n if (self.lastNeed > 1 && buf.length > 1) {\n if ((buf[1] & 0xC0) !== 0x80) {\n self.lastNeed = 1;\n return '\\ufffd';\n }\n if (self.lastNeed > 2 && buf.length > 2) {\n if ((buf[2] & 0xC0) !== 0x80) {\n self.lastNeed = 2;\n return '\\ufffd';\n }\n }\n }\n}\n\n// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer.\nfunction utf8FillLast(buf) {\n var p = this.lastTotal - this.lastNeed;\n var r = utf8CheckExtraBytes(this, buf, p);\n if (r !== undefined) return r;\n if (this.lastNeed <= buf.length) {\n buf.copy(this.lastChar, p, 0, this.lastNeed);\n return this.lastChar.toString(this.encoding, 0, this.lastTotal);\n }\n buf.copy(this.lastChar, p, 0, buf.length);\n this.lastNeed -= buf.length;\n}\n\n// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a\n// partial character, the character's bytes are buffered until the required\n// number of bytes are available.\nfunction utf8Text(buf, i) {\n var total = utf8CheckIncomplete(this, buf, i);\n if (!this.lastNeed) return buf.toString('utf8', i);\n this.lastTotal = total;\n var end = buf.length - (total - this.lastNeed);\n buf.copy(this.lastChar, 0, end);\n return buf.toString('utf8', i, end);\n}\n\n// For UTF-8, a replacement character is added when ending on a partial\n// character.\nfunction utf8End(buf) {\n var r = buf && buf.length ? this.write(buf) : '';\n if (this.lastNeed) return r + '\\ufffd';\n return r;\n}\n\n// UTF-16LE typically needs two bytes per character, but even if we have an even\n// number of bytes available, we need to check if we end on a leading/high\n// surrogate. In that case, we need to wait for the next two bytes in order to\n// decode the last character properly.\nfunction utf16Text(buf, i) {\n if ((buf.length - i) % 2 === 0) {\n var r = buf.toString('utf16le', i);\n if (r) {\n var c = r.charCodeAt(r.length - 1);\n if (c >= 0xD800 && c <= 0xDBFF) {\n this.lastNeed = 2;\n this.lastTotal = 4;\n this.lastChar[0] = buf[buf.length - 2];\n this.lastChar[1] = buf[buf.length - 1];\n return r.slice(0, -1);\n }\n }\n return r;\n }\n this.lastNeed = 1;\n this.lastTotal = 2;\n this.lastChar[0] = buf[buf.length - 1];\n return buf.toString('utf16le', i, buf.length - 1);\n}\n\n// For UTF-16LE we do not explicitly append special replacement characters if we\n// end on a partial character, we simply let v8 handle that.\nfunction utf16End(buf) {\n var r = buf && buf.length ? this.write(buf) : '';\n if (this.lastNeed) {\n var end = this.lastTotal - this.lastNeed;\n return r + this.lastChar.toString('utf16le', 0, end);\n }\n return r;\n}\n\nfunction base64Text(buf, i) {\n var n = (buf.length - i) % 3;\n if (n === 0) return buf.toString('base64', i);\n this.lastNeed = 3 - n;\n this.lastTotal = 3;\n if (n === 1) {\n this.lastChar[0] = buf[buf.length - 1];\n } else {\n this.lastChar[0] = buf[buf.length - 2];\n this.lastChar[1] = buf[buf.length - 1];\n }\n return buf.toString('base64', i, buf.length - n);\n}\n\nfunction base64End(buf) {\n var r = buf && buf.length ? this.write(buf) : '';\n if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed);\n return r;\n}\n\n// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex)\nfunction simpleWrite(buf) {\n return buf.toString(this.encoding);\n}\n\nfunction simpleEnd(buf) {\n return buf && buf.length ? this.write(buf) : '';\n}","\"use strict\";\n\nvar stream = require(\"readable-stream\");\n\nfunction DuplexWrapper(options, writable, readable) {\n if (typeof readable === \"undefined\") {\n readable = writable;\n writable = options;\n options = null;\n }\n\n stream.Duplex.call(this, options);\n\n if (typeof readable.read !== \"function\") {\n readable = (new stream.Readable(options)).wrap(readable);\n }\n\n this._writable = writable;\n this._readable = readable;\n this._waiting = false;\n\n var self = this;\n\n writable.once(\"finish\", function() {\n self.end();\n });\n\n this.once(\"finish\", function() {\n writable.end();\n });\n\n readable.on(\"readable\", function() {\n if (self._waiting) {\n self._waiting = false;\n self._read();\n }\n });\n\n readable.once(\"end\", function() {\n self.push(null);\n });\n\n if (!options || typeof options.bubbleErrors === \"undefined\" || options.bubbleErrors) {\n writable.on(\"error\", function(err) {\n self.emit(\"error\", err);\n });\n\n readable.on(\"error\", function(err) {\n self.emit(\"error\", err);\n });\n }\n}\n\nDuplexWrapper.prototype = Object.create(stream.Duplex.prototype, {constructor: {value: DuplexWrapper}});\n\nDuplexWrapper.prototype._write = function _write(input, encoding, done) {\n this._writable.write(input, encoding, done);\n};\n\nDuplexWrapper.prototype._read = function _read() {\n var buf;\n var reads = 0;\n while ((buf = this._readable.read()) !== null) {\n this.push(buf);\n reads++;\n }\n if (reads === 0) {\n this._waiting = true;\n }\n};\n\nmodule.exports = function duplex2(options, writable, readable) {\n return new DuplexWrapper(options, writable, readable);\n};\n\nmodule.exports.DuplexWrapper = DuplexWrapper;\n","/* eslint-disable node/no-deprecated-api */\nvar buffer = require('buffer')\nvar Buffer = buffer.Buffer\n\n// alternative to using Object.keys for old browsers\nfunction copyProps (src, dst) {\n for (var key in src) {\n dst[key] = src[key]\n }\n}\nif (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) {\n module.exports = buffer\n} else {\n // Copy properties from require('buffer')\n copyProps(buffer, exports)\n exports.Buffer = SafeBuffer\n}\n\nfunction SafeBuffer (arg, encodingOrOffset, length) {\n return Buffer(arg, encodingOrOffset, length)\n}\n\n// Copy static methods from Buffer\ncopyProps(Buffer, SafeBuffer)\n\nSafeBuffer.from = function (arg, encodingOrOffset, length) {\n if (typeof arg === 'number') {\n throw new TypeError('Argument must not be a number')\n }\n return Buffer(arg, encodingOrOffset, length)\n}\n\nSafeBuffer.alloc = function (size, fill, encoding) {\n if (typeof size !== 'number') {\n throw new TypeError('Argument must be a number')\n }\n var buf = Buffer(size)\n if (fill !== undefined) {\n if (typeof encoding === 'string') {\n buf.fill(fill, encoding)\n } else {\n buf.fill(fill)\n }\n } else {\n buf.fill(0)\n }\n return buf\n}\n\nSafeBuffer.allocUnsafe = function (size) {\n if (typeof size !== 'number') {\n throw new TypeError('Argument must be a number')\n }\n return Buffer(size)\n}\n\nSafeBuffer.allocUnsafeSlow = function (size) {\n if (typeof size !== 'number') {\n throw new TypeError('Argument must be a number')\n }\n return buffer.SlowBuffer(size)\n}\n"],"names":[],"sourceRoot":""}