43 lines
1.4 KiB
JavaScript
43 lines
1.4 KiB
JavaScript
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var fs = require('fs');
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var path = require('path');
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var through = require('through2');
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var convert = require('convert-source-map');
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var SEARCH_KEY = '//# sourceMappingURL=';
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module.exports = function (browserify, options) {
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// debug mode only
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if (browserify._options.debug) {
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// Get the map file name
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var map = options._ ? options._[0] : browserify.argv.outfile + '.map';
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// create a transform stream
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var createStream = function () {
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var code = '';
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var stream = through.obj(function (buf, enc, next) {
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// accumulate the code chunks
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code += buf.toString();
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next();
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}, function (next) {
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var index = code.indexOf(SEARCH_KEY);
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var sourcemap = code.substr(index);
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var json = convert.fromComment(sourcemap).toJSON(2);
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fs.writeFileSync(map, json);
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code = code.substr(0, index) + SEARCH_KEY + path.basename(map);
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this.push(new Buffer(code));
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next();
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});
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stream.label = "mapstraction";
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return stream;
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};
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// hook into the bundle generation pipeline of Browserify
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browserify.pipeline.get("wrap").push(createStream());
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browserify.on("reset", function () {
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browserify.pipeline.get("wrap").push(createStream());
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});
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}
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};
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