gree_leran/node_modules/webpack-sources/lib/helpers/streamAndGetSourceAndMap.js

103 lines
2.1 KiB
JavaScript

/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const createMappingsSerializer = require("./createMappingsSerializer");
const streamChunks = require("./streamChunks");
const streamAndGetSourceAndMap = (
inputSource,
options,
onChunk,
onSource,
onName
) => {
let code = "";
let mappings = "";
let sources = [];
let sourcesContent = [];
let names = [];
const addMapping = createMappingsSerializer(
Object.assign({}, options, { columns: true })
);
const finalSource = !!(options && options.finalSource);
const { generatedLine, generatedColumn, source } = streamChunks(
inputSource,
options,
(
chunk,
generatedLine,
generatedColumn,
sourceIndex,
originalLine,
originalColumn,
nameIndex
) => {
if (chunk !== undefined) code += chunk;
mappings += addMapping(
generatedLine,
generatedColumn,
sourceIndex,
originalLine,
originalColumn,
nameIndex
);
return onChunk(
finalSource ? undefined : chunk,
generatedLine,
generatedColumn,
sourceIndex,
originalLine,
originalColumn,
nameIndex
);
},
(sourceIndex, source, sourceContent) => {
while (sources.length < sourceIndex) {
sources.push(null);
}
sources[sourceIndex] = source;
if (sourceContent !== undefined) {
while (sourcesContent.length < sourceIndex) {
sourcesContent.push(null);
}
sourcesContent[sourceIndex] = sourceContent;
}
return onSource(sourceIndex, source, sourceContent);
},
(nameIndex, name) => {
while (names.length < nameIndex) {
names.push(null);
}
names[nameIndex] = name;
return onName(nameIndex, name);
}
);
const resultSource = source !== undefined ? source : code;
return {
result: {
generatedLine,
generatedColumn,
source: finalSource ? resultSource : undefined
},
source: resultSource,
map:
mappings.length > 0
? {
version: 3,
file: "x",
mappings,
sources,
sourcesContent:
sourcesContent.length > 0 ? sourcesContent : undefined,
names
}
: null
};
};
module.exports = streamAndGetSourceAndMap;