/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const createMappingsSerializer = require("./createMappingsSerializer");
/** @typedef {import("../Source").RawSourceMap} RawSourceMap */
/** @typedef {import("../Source").SourceAndMap} SourceAndMap */
/** @typedef {import("./streamChunks").Options} Options */
/** @typedef {import("./streamChunks").StreamChunksFunction} StreamChunksFunction */
/** @typedef {{ streamChunks: StreamChunksFunction }} SourceLikeWithStreamChunks */
/**
* @param {SourceLikeWithStreamChunks} inputSource input source
* @param {Options=} options options
* @returns {SourceAndMap} map
*/
module.exports.getSourceAndMap = (inputSource, options) => {
let code = "";
let mappings = "";
/** @type {(string | null)[]} */
const potentialSources = [];
/** @type {(string | null)[]} */
const potentialSourcesContent = [];
/** @type {(string | null)[]} */
const potentialNames = [];
const addMapping = createMappingsSerializer(options);
const { source } = inputSource.streamChunks(
{ ...options, finalSource: true },
(
chunk,
generatedLine,
generatedColumn,
sourceIndex,
originalLine,
originalColumn,
nameIndex,
) => {
if (chunk !== undefined) code += chunk;
mappings += addMapping(
generatedLine,
generatedColumn,
sourceIndex,
originalLine,
originalColumn,
nameIndex,
);
},
(sourceIndex, source, sourceContent) => {
while (potentialSources.length < sourceIndex) {
potentialSources.push(null);
}
potentialSources[sourceIndex] = source;
if (sourceContent !== undefined) {
while (potentialSourcesContent.length < sourceIndex) {
potentialSourcesContent.push(null);
}
potentialSourcesContent[sourceIndex] = sourceContent;
}
},
(nameIndex, name) => {
while (potentialNames.length < nameIndex) {
potentialNames.push(null);
}
potentialNames[nameIndex] = name;
},
);
return {
source: source !== undefined ? source : code,
map:
mappings.length > 0
? {
version: 3,
file: "x",
mappings,
// We handle broken sources as `null`, in spec this field should be string, but no information what we should do in such cases if we change type it will be breaking change
sources: /** @type {string[]} */ (potentialSources),
sourcesContent:
potentialSourcesContent.length > 0
? /** @type {string[]} */ (potentialSourcesContent)
: undefined,
names: /** @type {string[]} */ (potentialNames),
}
: null,
};
};
/**
* @param {SourceLikeWithStreamChunks} source source
* @param {Options=} options options
* @returns {RawSourceMap | null} map
*/
module.exports.getMap = (source, options) => {
let mappings = "";
/** @type {(string | null)[]} */
const potentialSources = [];
/** @type {(string | null)[]} */
const potentialSourcesContent = [];
/** @type {(string | null)[]} */
const potentialNames = [];
const addMapping = createMappingsSerializer(options);
source.streamChunks(
{ ...options, source: false, finalSource: true },
(
chunk,
generatedLine,
generatedColumn,
sourceIndex,
originalLine,
originalColumn,
nameIndex,
) => {
mappings += addMapping(
generatedLine,
generatedColumn,
sourceIndex,
originalLine,
originalColumn,
nameIndex,
);
},
(sourceIndex, source, sourceContent) => {
while (potentialSources.length < sourceIndex) {
potentialSources.push(null);
}
potentialSources[sourceIndex] = source;
if (sourceContent !== undefined) {
while (potentialSourcesContent.length < sourceIndex) {
potentialSourcesContent.push(null);
}
potentialSourcesContent[sourceIndex] = sourceContent;
}
},
(nameIndex, name) => {
while (potentialNames.length < nameIndex) {
potentialNames.push(null);
}
potentialNames[nameIndex] = name;
},
);
return mappings.length > 0
? {
version: 3,
file: "x",
mappings,
// We handle broken sources as `null`, in spec this field should be string, but no information what we should do in such cases if we change type it will be breaking change
sources: /** @type {string[]} */ (potentialSources),
sourcesContent:
potentialSourcesContent.length > 0
? /** @type {string[]} */ (potentialSourcesContent)
: undefined,
names: /** @type {string[]} */ (potentialNames),
}
: null;
};