| 1 | 'use strict';
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| 2 |
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| 3 | const buble = require('buble');
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| 4 | const composeSourceMap = require('compose-source-map');
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| 5 | const path = require('path');
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| 6 |
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| 7 | module.exports = function(grunt) {
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| 8 | grunt.registerMultiTask('buble', function() {
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| 9 |
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| 10 | this.files.forEach(file => {
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| 11 | const options = this.options();
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| 12 | if (file.src.length > 1) grunt.log.fatal('only one src file accepted per dest');
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| 13 | const src = file.src[0];
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| 14 | const dest = file.dest || src;
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| 15 | const result = buble.transform(grunt.file.read(src), {
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| 16 | file: path.basename(dest), source: path.basename(src), transforms: {dangerousForOf: true}
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| 17 | });
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| 18 | grunt.file.write(dest, result.code);
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| 19 | if (options.sourceMap) {
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| 20 | let map = result.map;
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| 21 | delete map.sourcesContent;
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| 22 | if (options.sourceMapIn) {
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| 23 | const mapSrc = grunt.util.kindOf(options.sourceMapIn) === 'function' ?
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| 24 | options.sourceMapIn(src) : options.sourceMapIn;
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| 25 | map = composeSourceMap(grunt.file.readJSON(mapSrc), map);
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| 26 | }
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| 27 | const mapDest = (grunt.util.kindOf(options.sourceMapName) === 'function' ?
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| 28 | options.sourceMapName(src) : options.sourceMapName) || (dest + '.map');
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| 29 | grunt.file.write(mapDest, JSON.stringify(map));
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| 30 | }
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| 31 | });
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| 32 | });
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| 33 | };
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