@formatjs/cli-lib/lib_esnext/src/parse_script.js

Lib for CLI for formatjs.

import { transformWithTs } from '@formatjs/ts-transformer';
import ts from 'typescript';
import { debug } from './console_utils';
/**
 * Invoid TypeScript module transpilation with our TS transformer
 * @param opts Formatjs TS Transformer opt
 * @param fn filename
 */
export function parseScript(opts, fn) {
    return (source) => {
        let output;
        try {
            debug('Using TS compiler to process file', fn);
            output = ts.transpileModule(source, {
                compilerOptions: {
                    allowJs: true,
                    target: ts.ScriptTarget.ESNext,
                    noEmit: true,
                    experimentalDecorators: true,
                },
                reportDiagnostics: true,
                fileName: fn,
                transformers: {
                    before: [transformWithTs(ts, opts)],
                },
            });
        }
        catch (e) {
            if (e instanceof Error) {
                e.message = `Error processing file ${fn} 
${e.message || ''}`;
            }
            throw e;
        }
        if (output.diagnostics) {
            const errs = output.diagnostics.filter(d => d.category === ts.DiagnosticCategory.Error);
            if (errs.length) {
                throw new Error(ts.formatDiagnosticsWithColorAndContext(errs, {
                    getCanonicalFileName: fileName => fileName,
                    getCurrentDirectory: () => process.cwd(),
                    getNewLine: () => ts.sys.newLine,
                }));
            }
        }
    };
}