hexo/node_modules/workbox-build/build/lib/replace-and-update-source-m...

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2023-09-25 15:58:56 +08:00
"use strict";
/*
Copyright 2019 Google LLC
Use of this source code is governed by an MIT-style
license that can be found in the LICENSE file or at
https://opensource.org/licenses/MIT.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.replaceAndUpdateSourceMap = void 0;
const source_map_1 = require("source-map");
/**
* Adapted from https://github.com/nsams/sourcemap-aware-replace, with modern
* JavaScript updates, along with additional properties copied from originalMap.
*
* @param {Object} options
* @param {string} options.jsFilename The name for the file whose contents
* correspond to originalSource.
* @param {Object} options.originalMap The sourcemap for originalSource,
* prior to any replacements.
* @param {string} options.originalSource The source code, prior to any
* replacements.
* @param {string} options.replaceString A string to swap in for searchString.
* @param {string} options.searchString A string in originalSource to replace.
* Only the first occurrence will be replaced.
* @return {{source: string, map: string}} An object containing both
* originalSource with the replacement applied, and the modified originalMap.
*
* @private
*/
async function replaceAndUpdateSourceMap({ jsFilename, originalMap, originalSource, replaceString, searchString, }) {
const generator = new source_map_1.SourceMapGenerator({
file: jsFilename,
});
const consumer = await new source_map_1.SourceMapConsumer(originalMap);
let pos;
let src = originalSource;
const replacements = [];
let lineNum = 0;
let filePos = 0;
const lines = src.split('\n');
for (let line of lines) {
lineNum++;
let searchPos = 0;
while ((pos = line.indexOf(searchString, searchPos)) !== -1) {
src =
src.substring(0, filePos + pos) +
replaceString +
src.substring(filePos + pos + searchString.length);
line =
line.substring(0, pos) +
replaceString +
line.substring(pos + searchString.length);
replacements.push({ line: lineNum, column: pos });
searchPos = pos + replaceString.length;
}
filePos += line.length + 1;
}
replacements.reverse();
consumer.eachMapping((mapping) => {
for (const replacement of replacements) {
if (replacement.line === mapping.generatedLine &&
mapping.generatedColumn > replacement.column) {
const offset = searchString.length - replaceString.length;
mapping.generatedColumn -= offset;
}
}
if (mapping.source) {
const newMapping = {
generated: {
line: mapping.generatedLine,
column: mapping.generatedColumn,
},
original: {
line: mapping.originalLine,
column: mapping.originalColumn,
},
source: mapping.source,
};
return generator.addMapping(newMapping);
}
return mapping;
});
consumer.destroy();
// JSON.parse returns any.
// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
const updatedSourceMap = Object.assign(JSON.parse(generator.toString()), {
names: originalMap.names,
sourceRoot: originalMap.sourceRoot,
sources: originalMap.sources,
sourcesContent: originalMap.sourcesContent,
});
return {
map: JSON.stringify(updatedSourceMap),
source: src,
};
}
exports.replaceAndUpdateSourceMap = replaceAndUpdateSourceMap;