1 | /***********************************************************************
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2 |
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3 | A JavaScript tokenizer / parser / beautifier / compressor.
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4 | https://github.com/mishoo/UglifyJS2
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5 |
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6 | -------------------------------- (C) ---------------------------------
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7 |
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8 | Author: Mihai Bazon
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9 | <mihai.bazon@gmail.com>
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10 | http://mihai.bazon.net/blog
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11 |
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12 | Distributed under the BSD license:
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13 |
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14 | Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com>
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15 |
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16 | Redistribution and use in source and binary forms, with or without
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17 | modification, are permitted provided that the following conditions
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18 | are met:
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19 |
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20 | * Redistributions of source code must retain the above
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21 | copyright notice, this list of conditions and the following
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22 | disclaimer.
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23 |
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24 | * Redistributions in binary form must reproduce the above
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25 | copyright notice, this list of conditions and the following
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26 | disclaimer in the documentation and/or other materials
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27 | provided with the distribution.
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28 |
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29 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY
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30 | EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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31 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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32 | PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
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33 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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34 | OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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35 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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36 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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37 | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
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38 | TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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39 | THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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40 | SUCH DAMAGE.
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41 |
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42 | ***********************************************************************/
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43 |
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44 | ;
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45 |
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46 | import MOZ_SourceMap from "source-map";
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47 | import {
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48 | defaults,
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49 | } from "./utils/index.js";
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50 |
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51 | // a small wrapper around fitzgen's source-map library
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52 | async function SourceMap(options) {
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53 | options = defaults(options, {
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54 | file : null,
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55 | root : null,
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56 | orig : null,
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57 |
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58 | orig_line_diff : 0,
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59 | dest_line_diff : 0,
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60 | });
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61 |
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62 | var orig_map;
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63 | var generator = new MOZ_SourceMap.SourceMapGenerator({
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64 | file : options.file,
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65 | sourceRoot : options.root
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66 | });
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67 |
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68 | if (options.orig) {
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69 | orig_map = await new MOZ_SourceMap.SourceMapConsumer(options.orig);
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70 | orig_map.sources.forEach(function(source) {
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71 | var sourceContent = orig_map.sourceContentFor(source, true);
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72 | if (sourceContent) {
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73 | generator.setSourceContent(source, sourceContent);
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74 | }
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75 | });
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76 | }
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77 |
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78 | function add(source, gen_line, gen_col, orig_line, orig_col, name) {
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79 | if (orig_map) {
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80 | var info = orig_map.originalPositionFor({
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81 | line: orig_line,
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82 | column: orig_col
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83 | });
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84 | if (info.source === null) {
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85 | return;
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86 | }
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87 | source = info.source;
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88 | orig_line = info.line;
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89 | orig_col = info.column;
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90 | name = info.name || name;
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91 | }
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92 | generator.addMapping({
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93 | generated : { line: gen_line + options.dest_line_diff, column: gen_col },
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94 | original : { line: orig_line + options.orig_line_diff, column: orig_col },
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95 | source : source,
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96 | name : name
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97 | });
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98 | }
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99 |
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100 | return {
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101 | add : add,
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102 | get : function() { return generator; },
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103 | toString : function() { return generator.toString(); },
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104 | destroy : function () {
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105 | if (orig_map && orig_map.destroy) {
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106 | orig_map.destroy();
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107 | }
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108 | }
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109 | };
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110 | }
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111 |
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112 | export {
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113 | SourceMap,
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114 | };
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