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34 lines
1.1 KiB
34 lines
1.1 KiB
"use strict"; |
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Object.defineProperty(exports, "__esModule", { value: true }); |
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const stream = require("stream"); |
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/** |
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* Transform an iterable into a node readable stream. |
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*/ |
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function iterableToStream(src, options = { encoding: 'utf8' }) { |
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return new ReadableObservableStream(src, options); |
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} |
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exports.iterableToStream = iterableToStream; |
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class ReadableObservableStream extends stream.Readable { |
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constructor(_source, options) { |
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super(options); |
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this._source = _source; |
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} |
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_read() { |
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if (!this.iter) { |
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this.iter = this._source[Symbol.iterator](); |
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} |
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let r = this.iter.next(); |
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while (!r.done && this.push(r.value)) { |
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r = this.iter.next(); |
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} |
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if (r.done) { |
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// since it is possible for r.value to have something meaningful, we must check. |
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if (r.value !== null && r.value !== undefined) { |
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this.push(r.value); |
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} |
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this.push(null); |
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} |
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} |
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} |
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exports.default = iterableToStream; |
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//# sourceMappingURL=iterableToStream.js.map
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