rollup-plugin-sourcemaps2/dist/index.cjs

Rollup plugin for grabbing source maps from sourceMappingURLs

'use strict';

const fs = require('node:fs');
const node_util = require('node:util');
const pluginUtils = require('@rollup/pluginutils');
const sourceMapResolve_js = require('./source-map-resolve.cjs');

const { createFilter } = pluginUtils;
function sourcemaps(// eslint-disable-next-line @typescript-eslint/unbound-method
{ include, exclude, readFile = fs.readFile } = {}) {
    // Create a filter function based on the include and exclude options
    const filter = createFilter(include, exclude);
    // Promisify the readFile function
    const promisifiedReadFile = node_util.promisify(readFile);
    return {
        name: 'sourcemaps',
        load: async function(id) {
            let code;
            // If the id does not pass the filter, return null
            if (!filter(id)) {
                return null;
            }
            try {
                // Try to read the file with the given id
                code = (await promisifiedReadFile(id)).toString();
                // Add the file to the watch list
                this.addWatchFile(id);
            } catch  {
                try {
                    // If reading fails, try again without a query suffix that some plugins use
                    const cleanId = id.replace(/\?.*$/, '');
                    code = (await promisifiedReadFile(cleanId)).toString();
                    // Add the file to the watch list
                    this.addWatchFile(cleanId);
                } catch  {
                    // If reading still fails, warn and return null
                    this.warn('Failed reading file');
                    return null;
                }
            }
            let map;
            try {
                // Try to resolve the source map for the code
                const result = await sourceMapResolve_js.resolveSourceMap(code, id, promisifiedReadFile);
                // If the code contained no sourceMappingURL, return the code
                if (result === null) {
                    return code;
                }
                // If the source map was resolved, assign it to map
                map = result.map;
            } catch  {
                // If resolving the source map fails, warn and return the code
                this.warn('Failed resolving source map');
                return code;
            }
            // If the sources are not included in the map, try to resolve them
            if (map.sourcesContent === undefined) {
                try {
                    const { sourcesContent } = await sourceMapResolve_js.resolveSources(map, id, promisifiedReadFile);
                    // If all sources are strings, assign them to map.sourcesContent
                    if (sourcesContent.every((item)=>typeof item === 'string')) {
                        map.sourcesContent = sourcesContent;
                    }
                } catch  {
                    // If resolving the sources fails, warn
                    this.warn('Failed resolving sources for source map');
                }
            }
            // Return the code and the map
            return {
                code,
                map
            };
        }
    };
}

module.exports = sourcemaps;
//# sourceMappingURL=index.cjs.map