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{"version":3,"file":"stream-base64.js","names":["Stream","require","StreamBase64","Duplex","constructor","pipes","write","cork","uncork","end","read","setEncoding","encoding","pause","resume","isPaused","pipe","destination","push","unpipe","filter","unshift","Error","wrap","module","exports"],"sources":["../../../lib/utils/stream-base64.js"],"sourcesContent":["const Stream = require('readable-stream');\n\n// =============================================================================\n// StreamBase64 - A utility to convert to/from base64 stream\n// Note: does not buffer data, must be piped\nclass StreamBase64 extends Stream.Duplex {\n constructor() {\n super();\n\n // consuming pipe streams go here\n this.pipes = [];\n }\n\n // writable\n // event drain - if write returns false (which it won't), indicates when safe to write again.\n // finish - end() has been called\n // pipe(src) - pipe() has been called on readable\n // unpipe(src) - unpipe() has been called on readable\n // error - duh\n\n write(/* data, encoding */) {\n return true;\n }\n\n cork() {}\n\n uncork() {}\n\n end(/* chunk, encoding, callback */) {}\n\n // readable\n // event readable - some data is now available\n // event data - switch to flowing mode - feeds chunks to handler\n // event end - no more data\n // event close - optional, indicates upstream close\n // event error - duh\n read(/* size */) {}\n\n setEncoding(encoding) {\n // causes stream.read or stream.on('data) to return strings of encoding instead of Buffer objects\n this.encoding = encoding;\n }\n\n pause() {}\n\n resume() {}\n\n isPaused() {}\n\n pipe(destination) {\n // add destination to pipe list & write current buffer\n this.pipes.push(destination);\n }\n\n unpipe(destination) {\n // remove destination from pipe list\n this.pipes = this.pipes.filter(pipe => pipe !== destination);\n }\n\n unshift(/* chunk */) {\n // some numpty has read some data that's not for them and they want to put it back!\n // Might implement this some day\n throw new Error('Not Implemented');\n }\n\n wrap(/* stream */) {\n // not implemented\n throw new Error('Not Implemented');\n }\n}\n\nmodule.exports = StreamBase64;\n"],"mappings":";;AAAA,MAAMA,MAAM,GAAGC,OAAO,CAAC,iBAAiB,CAAC;;AAEzC;AACA;AACA;AACA,MAAMC,YAAY,SAASF,MAAM,CAACG,MAAM,CAAC;EACvCC,WAAWA,CAAA,EAAG;IACZ,KAAK,CAAC,CAAC;;IAEP;IACA,IAAI,CAACC,KAAK,GAAG,EAAE;EACjB;;EAEA;EACA;EACA;EACA;EACA;EACA;;EAEAC,KAAKA,CAAA,CAAC;EAAA,EAAsB;IAC1B,OAAO,IAAI;EACb;EAEAC,IAAIA,CAAA,EAAG,CAAC;EAERC,MAAMA,CAAA,EAAG,CAAC;EAEVC,GAAGA,CAAA,CAAC,iCAAiC,CAAC;;EAEtC;EACA;EACA;EACA;EACA;EACA;EACAC,IAAIA,CAAA,CAAC,YAAY,CAAC;EAElBC,WAAWA,CAACC,QAAQ,EAAE;IACpB;IACA,IAAI,CAACA,QAAQ,GAAGA,QAAQ;EAC1B;EAEAC,KAAKA,CAAA,EAAG,CAAC;EAETC,MAAMA,CAAA,EAAG,CAAC;EAEVC,QAAQA,CAAA,EAAG,CAAC;EAEZC,IAAIA,CAACC,WAAW,EAAE;IAChB;IACA,IAAI,CAACZ,KAAK,CAACa,IAAI,CAACD,WAAW,CAAC;EAC9B;EAEAE,MAAMA,CAACF,WAAW,EAAE;IAClB;IACA,IAAI,CAACZ,KAAK,GAAG,IAAI,CAACA,KAAK,CAACe,MAAM,CAACJ,IAAI,IAAIA,IAAI,KAAKC,WAAW,CAAC;EAC9D;EAEAI,OAAOA,CAAA,CAAC;EAAA,EAAa;IACnB;IACA;IACA,MAAM,IAAIC,KAAK,CAAC,iBAAiB,CAAC;EACpC;EAEAC,IAAIA,CAAA,CAAC;EAAA,EAAc;IACjB;IACA,MAAM,IAAID,KAAK,CAAC,iBAAiB,CAAC;EACpC;AACF;AAEAE,MAAM,CAACC,OAAO,GAAGvB,YAAY"}