| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546 | /*	MIT License http://www.opensource.org/licenses/mit-license.php	Author Tobias Koppers @sokra*/"use strict";var SourceNode = require("source-map").SourceNode;var SourceMapConsumer = require("source-map").SourceMapConsumer;class Source {	source() {		throw new Error("Abstract");	}	size() {		if(Buffer.from.length === 1) return new Buffer(this.source()).length;		return Buffer.byteLength(this.source())	}	map(options) {		return null;	}	sourceAndMap(options) {		return {			source: this.source(),			map: this.map()		};	}	node() {		throw new Error("Abstract");	}	listNode() {		throw new Error("Abstract");	}	updateHash(hash) {		var source = this.source();		hash.update(source || "");	}}module.exports = Source;
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