79 lines
2.1 KiB
JavaScript
79 lines
2.1 KiB
JavaScript
var JSONStream = require('JSONStream');
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var duplexer = require('duplexer');
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var through = require('through');
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var uglify = require('uglify-js');
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var fs = require('fs');
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var path = require('path');
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var combineSourceMap = require('combine-source-map');
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var prelude = (function () {
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var src = fs.readFileSync(path.join(__dirname, 'prelude.js'), 'utf8');
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return uglify(src) + '(typeof require!=="undefined"&&require,{';
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})();
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function newlinesIn(src) {
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if (!src) return 0;
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var newlines = src.match(/\n/g);
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return newlines ? newlines.length : 0;
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}
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module.exports = function (opts) {
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if (!opts) opts = {};
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var parser = opts.raw ? through() : JSONStream.parse([ true ]);
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var output = through(write, end);
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parser.pipe(output);
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var first = true;
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var entries = [];
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var order = [];
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var lineno = 1 + newlinesIn(prelude);
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var sourcemap;
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return duplexer(parser, output);
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function write (row) {
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if (first) this.queue(prelude);
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if (row.sourceFile) {
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sourcemap = sourcemap || combineSourceMap.create();
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sourcemap.addFile(
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{ sourceFile: row.sourceFile, source: row.source },
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{ line: lineno }
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);
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}
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var wrappedSource = [
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(first ? '' : ','),
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JSON.stringify(row.id),
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':[',
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'function(require,module,exports){\n',
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combineSourceMap.removeComments(row.source),
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'\n},',
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JSON.stringify(row.deps || {}),
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']'
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].join('');
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this.queue(wrappedSource);
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lineno += newlinesIn(wrappedSource);
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first = false;
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if (row.entry && row.order !== undefined) {
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entries.splice(row.order, 0, row.id);
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}
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else if (row.entry) entries.push(row.id);
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}
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function end () {
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if (first) this.queue(prelude);
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this.queue('},{},' + JSON.stringify(entries) + ')');
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if (sourcemap) this.queue('\n' + sourcemap.comment());
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this.queue(null);
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}
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};
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