ts-transform-esm-import/dist/resolve.js

Rewrite TypeScript import paths to ES Modules import paths

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
    __setModuleDefault(result, mod);
    return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.resolveCJSImport = resolveCJSImport;
exports.resolveInESModule = resolveInESModule;
exports.resolveInCJSModule = resolveInCJSModule;
const path = __importStar(require("path"));
const helper = __importStar(require("./helper"));
function checkFileExistsAndLog(file, logger) {
    logger?.log(`Checking if "${file}" exists`);
    return helper.fileExists(file);
}
function resolveCJSImport(resolverDir, importPath, sourceDir, logger) {
    const addExt = sourceDir ? helper.tsPath : helper.jsPath;
    let targetFile = addExt(path.join(resolverDir, importPath));
    if (checkFileExistsAndLog(targetFile, logger)) {
        return targetFile;
    }
    targetFile = addExt(path.join(resolverDir, importPath, 'index'));
    if (checkFileExistsAndLog(targetFile, logger)) {
        return targetFile;
    }
    return null;
}
function formatSubPath(s) {
    return s.startsWith('.') ? s : `./${s}`;
}
function resolveInESModule(_resolverDir, importPath, moduleDir, pkgPath, pkg, logger) {
    const hasSubImportPath = importPath.includes('/');
    logger?.log(`${importPath} has sub-paths: ${hasSubImportPath}`);
    const exports = pkg.exports ?? pkg.main;
    logger?.log(`Got \`exports\`: ${JSON.stringify(exports)}`);
    if (!exports) {
        throw new Error(`Fatal error: the package "${pkgPath}" is ESM but doesn't have a valid entry point`);
    }
    if (typeof exports === 'string') {
        if (hasSubImportPath) {
            throw new Error(`Fatal error: you're using sub-paths in "${importPath}", but the package "${pkgPath}" only supports a single entry "${exports}"`);
        }
        return path.join(moduleDir, exports);
    }
    else if (typeof exports === 'object') {
        const userSubPath = formatSubPath(hasSubImportPath ? importPath.substring(importPath.indexOf('/') + 1) : '.');
        const exportedSubPaths = {};
        for (const [k, v] of Object.entries(exports)) {
            exportedSubPaths[formatSubPath(k)] = v;
        }
        const mappedPath = exportedSubPaths[userSubPath];
        if (mappedPath) {
            return path.join(moduleDir, mappedPath);
        }
        throw new Error(`Fatal error: "${importPath}" doesn't have a match. Exported members "${JSON.stringify(exportedSubPaths)}"`);
    }
    else {
        throw new Error(`Fatal error: invalid package.json exports field, got "${exports}"`);
    }
}
function resolveInCJSModule(_resolverDir, importPath, moduleDir, _pkgPath, pkg, logger) {
    const hasSubImportPath = importPath.includes('/');
    logger?.log(`${importPath} has sub-paths: ${hasSubImportPath}`);
    const main = pkg.main ?? 'index.js';
    logger?.log(`Got \`main\`: ${JSON.stringify(exports)}`);
    if (hasSubImportPath) {
        return resolveCJSImport(moduleDir, importPath, false, logger);
    }
    if (pkg.module) {
        return path.join(moduleDir, pkg.module);
    }
    return path.join(moduleDir, main);
}
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