@ima/dev-utils/dist/sourceMapUtils.js

IMA.js dev utils used used mainly in @ima/cli and other dev-related utilities.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.extractSourceMappingUrl = void 0;
const helpers_1 = require("./helpers");
/**
 * Extracts sourceMappingURL from the provided file contents.
 * Based on https://github.com/facebook/create-react-app/blob/main/packages/react-error-overlay/src/utils/getSourceMap.js#L79.
 *
 * @param {string} fileUri The uri of the source file.
 * @param {string} fileContents Source file file contents.
 * @returns {string|null}
 */
function extractSourceMappingUrl(fileUri, fileContents) {
    let match = null;
    for (;;) {
        const next = helpers_1.RE_SOURCE_MAPPING_URL.exec(fileContents);
        if (next == null) {
            break;
        }
        match = next;
    }
    if (!(match && match[1])) {
        return null;
    }
    const sourceMappingUrl = match[1].toString();
    // Inline base64 source map
    if (sourceMappingUrl.includes('data:')) {
        throw new Error(`Sorry, base64 inline source-map encoding is not supported ${fileUri}.`);
    }
    // Prefix source map filename with path from fileUri
    const lastSlashIndex = fileUri.lastIndexOf('/');
    const mapFileUri = fileUri.substring(0, lastSlashIndex + 1) + sourceMappingUrl;
    return mapFileUri;
}
exports.extractSourceMappingUrl = extractSourceMappingUrl;