tsconfig paths for nodejs app with custom paths

tsconfig-paths-bootstrap.js

const tsConfig = require('./tsconfig.json');
const tsConfigPaths = require('tsconfig-paths');
const path = require('path');

const outDir = path.normalize(tsConfig.compilerOptions.outDir);
const rootDir = path.normalize(tsConfig.compilerOptions.rootDir);

const baseUrl = path.join(__dirname, tsConfig.compilerOptions.baseUrl);

let paths = tsConfig.compilerOptions.paths;

paths = Object.entries(paths).map(([key, values]) => {
    const result = values.map(item => {
        let pathNrml = path.normalize(item);
        if (pathNrml.startsWith(rootDir)) {
            pathNrml = pathNrml.replace(rootDir, outDir);
        }
        return pathNrml;
    });
    return [key, result];
}).reduce((acc, curr) => {
    acc[curr[0]] = curr[1];
    return acc;
}, {});

const cleanup = tsConfigPaths.register({
  baseUrl,
  paths
});
 
// When path registration is no longer needed
// cleanup();