All files util.ts

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import { getIO } from './io.js';
 
import { IOFs, IOPath, IOChildProcess } from './io.js';
 
const DEBUG = process.env['DEBUG'] ?? false;
const TEMPLATE_COPY_OPTIONS = {
    recursive: true,
    force: false,
    errorOnExist: true,
    dereference: true
};
const TEMPLATE_COPY_OPTIONS_FORCE = {
    recursive: true,
    force: true,
    errorOnExist: false,
    dereference: true
};
 
const isUndefined = (val: unknown): val is undefined =>
    typeof val === 'undefined';
 
const getTemplateDir = (fileUrl: string, relativePath: string) => {
    const url = new URL(fileUrl);
    const dir = getIO<IOPath>('path').resolve(url.pathname, relativePath);
    return dir;
};
 
// Error types in DefinitelyTyped for @types/node are currently
// a bit of a mess so replacing them wholesale here for now
interface CustomNodeGenericError {
    code: string;
    message: string;
    captureStackTrace: (target: NonNullable<unknown>, constructorOpt?: () => void) => void;
    stackTraceLimit: number;
    stack: string;
 
    cause?: {
        error?: CustomNodeError;
    };
}
export interface CustomNodeSystemError extends CustomNodeGenericError {
    errno: number;
    syscall: string;
 
    address: string;
    dest: string;
    info: Record<string, string>;
    path: string;
    port?: number;
}
 
type CustomNodeError = CustomNodeGenericError | CustomNodeSystemError;
 
const formatError = (err: CustomNodeError | Error): void => {
    // Cast all Errors to CustomNodeError due to DefinitelyTyped typing bugs
    err = err as CustomNodeError;
    const originalError = err.cause?.error ?? err;
    const message = `${err.message}${err.cause?.error ? `: ${originalError.message}` : ''}`;

    console.error(`
        ${message}

        Exiting...
    `, err);
}
 
const ignoreError = (e: unknown) => {
    DEBUG && console.log({ e })
};
const npmInstall = (cwd = '.', npm = 'npm') => {
    const {
        pid, stdout, stderr, status, signal, error
    } = getIO<IOChildProcess>('child_process').spawnSync(npm, ['install'], {
      cwd,
      stdio: 'inherit',
      encoding: 'utf8'
    });
    if (error ?? status !== 0) {
        formatError(new Error(error?.message, {
            cause: {
                error,
                stderr,
                signal,
                pid
            }
        }));
    }
    return stdout;
};
 
const copyTemplate = async (
    templatePath: string,
    { force = false } = {}
): Promise<void> => {
    const options = force ? TEMPLATE_COPY_OPTIONS_FORCE : TEMPLATE_COPY_OPTIONS;
    const dest = process.cwd();
    const { cp, rename, rm } = getIO<IOFs>('fs');
    await cp(templatePath, dest, options);
    await rename(`${dest}/_.npmrc`, `${dest}/.npmrc`).catch(ignoreError);
    await rename(`${dest}/_.gitignore`, `${dest}/.gitignore`).catch(ignoreError);
    await rm(`${dest}/package-lock.json`).catch(ignoreError);
};
 
export {
    isUndefined,
    getTemplateDir,
    npmInstall,
    formatError,
    copyTemplate
};