@bleed-believer/path-alias/dist/tool/swc-transpiler/ts-config-to-swc-options.js

Assign path alias using tsconfig.json file

import { dirname, resolve } from "path";
const cache = new Map();
export function tsConfigToSwcOptions(tsConfigResult) {
    const cached = cache.get(tsConfigResult);
    if (cached) {
        return structuredClone(cached);
    }
    const options = {};
    const { path, config } = tsConfigResult;
    const { emitDecoratorMetadata, experimentalDecorators, removeComments, module, target, sourceMap, sourceRoot, jsx, inlineSourceMap, baseUrl, paths } = config.compilerOptions ?? {};
    options.cwd = dirname(path);
    options.sourceRoot = sourceRoot;
    options.sourceMaps = inlineSourceMap ? 'inline' : sourceMap;
    // options.exclude = config.exclude
    //     ?.map(x => join(options.cwd!, x))
    //     ?.map(x => micromatch.makeRe(x).source);
    options.jsc = {
        target: target?.toLowerCase() ?? 'es2022',
        parser: {
            syntax: 'typescript',
            decorators: experimentalDecorators,
            tsx: !!jsx
        },
        transform: {
            decoratorMetadata: emitDecoratorMetadata
        },
        preserveAllComments: !removeComments,
        baseUrl: resolve(dirname(path), baseUrl ?? '.'),
        paths
    };
    switch(module?.toLowerCase()){
        case 'umd':
        case 'none':
        case 'system':
        case 'commonjs':
            {
                options.isModule = false;
                break;
            }
        default:
            {
                const type = module === 'nodenext' ? 'nodenext' : 'es6';
                options.isModule = true;
                options.module = {
                    type,
                    strict: true,
                    strictMode: true,
                    resolveFully: true
                };
            }
    }
    cache.set(tsConfigResult, structuredClone(options));
    return options;
}