import { buildSync, type BuildOptions, type BuildResult } from 'esbuild';
import { dirname } from 'path';
import { runInNewContext } from 'vm';
import { getSandBoxContext } from './getSandboxContext';
import { LoadEnvFileOptions } from './loadEnvFile';
import { logger } from './logger';
import { ESMxCJSRequire } from './utils/ESMxCJSHelpers';
const getTransformationOptions = (filePath: string): BuildOptions => ({
loader: {
'.js': 'js',
'.jsx': 'jsx',
'.mjs': 'js',
'.ts': 'ts',
'.tsx': 'tsx',
'.cjs': 'js',
'.json': 'json',
'.md': 'text',
'.mdx': 'text',
},
format: 'cjs', // Output format as commonjs
target: 'es2017',
packages: 'external',
write: false,
bundle: true,
banner: {
js: [
`globalThis.intlayer_file_path = ${JSON.stringify(filePath)};`,
`globalThis.intlayer_file_dir = ${JSON.stringify(dirname(filePath))};`,
].join('\n'),
},
});
/**
* Load the content declaration from the given path
*
* Accepts JSON, JS, MJS and TS files as configuration
*/
export const loadExternalFile = (
filePath: string,
envVarOptions?: LoadEnvFileOptions,
projectRequire?: NodeJS.Require,
additionalEnvVars?: Record<string, string>
): any | undefined => {
let fileContent: any | undefined = undefined;
const fileExtension = filePath.split('.').pop() ?? '';
try {
if (fileExtension === 'json') {
// Remove cache to force reloading
delete ESMxCJSRequire.cache[ESMxCJSRequire.resolve(filePath)];
// Assume JSON
return ESMxCJSRequire(filePath);
}
// Rest is JS, MJS or TS
const moduleResult: BuildResult = buildSync({
entryPoints: [filePath],
...getTransformationOptions(filePath),
});
const moduleResultString = moduleResult.outputFiles?.[0].text;
if (!moduleResultString) {
logger('File could not be loaded.', { level: 'error' });
return undefined;
}
const sandboxContext = getSandBoxContext(
envVarOptions,
projectRequire,
additionalEnvVars
);
runInNewContext(moduleResultString, sandboxContext);
if (
sandboxContext.exports.default &&
Object.keys(sandboxContext.exports.default).length > 0
) {
// ES Module
fileContent = sandboxContext.exports.default;
} else if (
sandboxContext.module.exports.defaults &&
Object.keys(sandboxContext.module.exports.defaults).length > 0
) {
// CommonJS
fileContent = sandboxContext.module.exports.default;
} else if (
sandboxContext.module.exports.default &&
Object.keys(sandboxContext.module.exports.default).length > 0
) {
// ES Module
fileContent = sandboxContext.module.exports.default;
} else if (
sandboxContext.module.exports &&
Object.keys(sandboxContext.module.exports).length > 0
) {
// Other
fileContent = sandboxContext.module.exports;
}
if (typeof fileContent === 'undefined') {
logger(`File file could not be loaded. Path : ${filePath}`);
return undefined;
}
return fileContent;
} catch (error) {
logger(
`Error: ${error} ${JSON.stringify((error as Error).stack, null, 2)}`,
{
level: 'error',
}
);
}
};
