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// If user passed `-c` or `--check` arguments to Node, check its syntax
// instead of actually running the file.
const { getOptionValue } = require('internal/options');
const {
prepareMainThreadExecution,
markBootstrapComplete
} = require('internal/process/pre_execution');
const {
readStdin
} = require('internal/process/execution');
const { pathToFileURL } = require('url');
const {
Module: {
_resolveFilename: resolveCJSModuleName,
},
wrapSafe,
} = require('internal/modules/cjs/loader');
// TODO(joyeecheung): not every one of these are necessary
prepareMainThreadExecution(true);
if (process.argv[1] && process.argv[1] !== '-') {
// Expand process.argv[1] into a full path.
const path = require('path');
process.argv[1] = path.resolve(process.argv[1]);
// Read the source.
const filename = resolveCJSModuleName(process.argv[1]);
const fs = require('fs');
const source = fs.readFileSync(filename, 'utf-8');
markBootstrapComplete();
loadESMIfNeeded(() => checkSyntax(source, filename));
} else {
markBootstrapComplete();
loadESMIfNeeded(() => readStdin((code) => {
checkSyntax(code, '[stdin]');
}));
}
function loadESMIfNeeded(cb) {
const { getOptionValue } = require('internal/options');
const hasModulePreImport = getOptionValue('--import').length > 0;
if (hasModulePreImport) {
const { loadESM } = require('internal/process/esm_loader');
loadESM(cb);
return;
}
cb();
}
async function checkSyntax(source, filename) {
let isModule = true;
if (filename === '[stdin]' || filename === '[eval]') {
isModule = getOptionValue('--input-type') === 'module';
} else {
const { defaultResolve } = require('internal/modules/esm/resolve');
const { defaultGetFormat } = require('internal/modules/esm/get_format');
const { url } = await defaultResolve(pathToFileURL(filename).toString());
const format = await defaultGetFormat(url);
isModule = format === 'module';
}
if (isModule) {
const { ModuleWrap } = internalBinding('module_wrap');
new ModuleWrap(filename, undefined, source, 0, 0);
return;
}
const { loadESM } = require('internal/process/esm_loader');
const { handleMainPromise } = require('internal/modules/run_main');
handleMainPromise(loadESM((loader) => wrapSafe(filename, source)));
}
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