From 14170f80b09acaa6233e5921f3f4faeefaf8c86d Mon Sep 17 00:00:00 2001 From: Joyee Cheung Date: Wed, 2 Oct 2024 20:07:30 +0200 Subject: [PATCH] module: do not warn when require(esm) comes from node_modules Some packages have been using try-catch to load require(esm) in environments that are available. In 23, where require(esm) is unflagged, we emit an experimental warning when require() is used to load ESM. To backport require(esm) to older LTS releases, however, this could break existing CLI output. To reduce the disruption for LTS, on older release lines, this commit is applied to skip the warning if require(esm) comes from node_modules. This warning will be eventually removed when require(esm) becomes stable. PR-URL: https://github.com/nodejs/node/pull/55217 Refs: https://github.com/nodejs/node/issues/52697 Reviewed-By: Matteo Collina Reviewed-By: Antoine du Hamel --- lib/internal/modules/cjs/loader.js | 53 +++++++++++------ .../test-require-node-modules-warning.js | 59 +++++++++++++++++++ .../import-import-require-esm.mjs | 2 + .../test_node_modules/import-require-esm.mjs | 2 + .../node_modules/esm/index.js | 1 + .../node_modules/esm/package.json | 4 ++ .../node_modules/import-require-esm/index.js | 2 + .../import-require-esm/package.json | 4 ++ .../node_modules/require-esm/index.js | 2 + .../test_node_modules/require-esm.js | 2 + .../test_node_modules/require-require-esm.js | 2 + 11 files changed, 116 insertions(+), 17 deletions(-) create mode 100644 test/es-module/test-require-node-modules-warning.js create mode 100644 test/fixtures/es-modules/test_node_modules/import-import-require-esm.mjs create mode 100644 test/fixtures/es-modules/test_node_modules/import-require-esm.mjs create mode 100644 test/fixtures/es-modules/test_node_modules/node_modules/esm/index.js create mode 100644 test/fixtures/es-modules/test_node_modules/node_modules/esm/package.json create mode 100644 test/fixtures/es-modules/test_node_modules/node_modules/import-require-esm/index.js create mode 100644 test/fixtures/es-modules/test_node_modules/node_modules/import-require-esm/package.json create mode 100644 test/fixtures/es-modules/test_node_modules/node_modules/require-esm/index.js create mode 100644 test/fixtures/es-modules/test_node_modules/require-esm.js create mode 100644 test/fixtures/es-modules/test_node_modules/require-require-esm.js diff --git a/lib/internal/modules/cjs/loader.js b/lib/internal/modules/cjs/loader.js index fef17d95b4b08f..91930a028d9966 100644 --- a/lib/internal/modules/cjs/loader.js +++ b/lib/internal/modules/cjs/loader.js @@ -70,6 +70,7 @@ const { module_export_private_symbol, module_parent_private_symbol, }, + isInsideNodeModules, } = internalBinding('util'); const { kEvaluated, createRequiredModuleFacade } = internalBinding('module_wrap'); @@ -1351,6 +1352,7 @@ let resolvedArgv; let hasPausedEntry = false; /** @type {import('vm').Script} */ +let emittedRequireModuleWarning = false; /** * Resolve and evaluate it synchronously as ESM if it's ESM. * @param {Module} mod CJS module instance @@ -1375,26 +1377,43 @@ function loadESMFromCJS(mod, filename) { setOwnProperty(process, 'mainModule', undefined); } else { const parent = mod[kModuleParent]; - let messagePrefix; - if (parent) { - // In the case of the module calling `require()`, it's more useful to know its absolute path. - let from = parent.filename || parent.id; - // In the case of the module being require()d, it's more useful to know the id passed into require(). - const to = mod.id || mod.filename; - if (from === 'internal/preload') { - from = '--require'; - } else if (from === '') { - from = 'The REPL'; - } else if (from === '.') { - from = 'The entry point'; - } else { - from &&= `CommonJS module ${from}`; + + if (!emittedRequireModuleWarning) { + let shouldEmitWarning = false; + // Check if the require() comes from node_modules. + if (parent) { + shouldEmitWarning = !isUnderNodeModules(parent.filename); + } else if (mod[kIsCachedByESMLoader]) { + // It comes from the require() built for `import cjs` and doesn't have a parent recorded + // in the CJS module instance. Inspect the stack trace to see if the require() + // comes from node_modules and reduce the noise. If there are more than 100 frames, + // just give up and assume it is under node_modules. + shouldEmitWarning = !isInsideNodeModules(100, true); } - if (from && to) { - messagePrefix = `${from} is loading ES Module ${to} using require().\n`; + if (shouldEmitWarning) { + let messagePrefix; + if (parent) { + // In the case of the module calling `require()`, it's more useful to know its absolute path. + let from = parent.filename || parent.id; + // In the case of the module being require()d, it's more useful to know the id passed into require(). + const to = mod.id || mod.filename; + if (from === 'internal/preload') { + from = '--require'; + } else if (from === '') { + from = 'The REPL'; + } else if (from === '.') { + from = 'The entry point'; + } else { + from &&= `CommonJS module ${from}`; + } + if (from && to) { + messagePrefix = `${from} is loading ES Module ${to} using require().\n`; + } + } + emitExperimentalWarning('Support for loading ES Module in require()', messagePrefix); + emittedRequireModuleWarning = true; } } - emitExperimentalWarning('Support for loading ES Module in require()', messagePrefix); const { wrap, namespace, diff --git a/test/es-module/test-require-node-modules-warning.js b/test/es-module/test-require-node-modules-warning.js new file mode 100644 index 00000000000000..837f174fd28950 --- /dev/null +++ b/test/es-module/test-require-node-modules-warning.js @@ -0,0 +1,59 @@ +'use strict'; + +// This checks the experimental warning for require(esm) is disabled when the +// require() comes from node_modules. +require('../common'); +const { spawnSyncAndAssert } = require('../common/child_process'); +const fixtures = require('../common/fixtures'); + +const warningRE = /Support for loading ES Module in require\(\)/; + +// The fixtures are placed in a directory that includes "node_modules" in its name +// to check false negatives. + +// require() in non-node_modules -> esm in node_modules should warn. +spawnSyncAndAssert( + process.execPath, + [fixtures.path('es-modules', 'test_node_modules', 'require-esm.js')], + { + trim: true, + stderr: warningRE, + stdout: 'world', + } +); + +// require() in non-node_modules -> require() in node_modules -> esm in node_modules +// should not warn. +spawnSyncAndAssert( + process.execPath, + [fixtures.path('es-modules', 'test_node_modules', 'require-require-esm.js')], + { + trim: true, + stderr: '', + stdout: 'world', + } +); + +// Import in non-node_modules -> require() in node_modules -> esm in node_modules +// should not warn. +spawnSyncAndAssert( + process.execPath, + [fixtures.path('es-modules', 'test_node_modules', 'import-require-esm.mjs')], + { + trim: true, + stderr: '', + stdout: 'world', + } +); + +// Import in non-node_modules -> import in node_modules -> +// require() in node_modules -> esm in node_modules should not warn. +spawnSyncAndAssert( + process.execPath, + [fixtures.path('es-modules', 'test_node_modules', 'import-import-require-esm.mjs')], + { + trim: true, + stderr: '', + stdout: 'world', + } +); diff --git a/test/fixtures/es-modules/test_node_modules/import-import-require-esm.mjs b/test/fixtures/es-modules/test_node_modules/import-import-require-esm.mjs new file mode 100644 index 00000000000000..d470088c38caee --- /dev/null +++ b/test/fixtures/es-modules/test_node_modules/import-import-require-esm.mjs @@ -0,0 +1,2 @@ +import mod from 'import-require-esm'; +console.log(mod.hello); diff --git a/test/fixtures/es-modules/test_node_modules/import-require-esm.mjs b/test/fixtures/es-modules/test_node_modules/import-require-esm.mjs new file mode 100644 index 00000000000000..2ad346de9e841c --- /dev/null +++ b/test/fixtures/es-modules/test_node_modules/import-require-esm.mjs @@ -0,0 +1,2 @@ +import mod from 'require-esm'; +console.log(mod.hello); diff --git a/test/fixtures/es-modules/test_node_modules/node_modules/esm/index.js b/test/fixtures/es-modules/test_node_modules/node_modules/esm/index.js new file mode 100644 index 00000000000000..35f468bf4856d8 --- /dev/null +++ b/test/fixtures/es-modules/test_node_modules/node_modules/esm/index.js @@ -0,0 +1 @@ +export const hello = 'world'; diff --git a/test/fixtures/es-modules/test_node_modules/node_modules/esm/package.json b/test/fixtures/es-modules/test_node_modules/node_modules/esm/package.json new file mode 100644 index 00000000000000..07aec65d5a4f31 --- /dev/null +++ b/test/fixtures/es-modules/test_node_modules/node_modules/esm/package.json @@ -0,0 +1,4 @@ +{ + "type": "module", + "main": "index.js" +} diff --git a/test/fixtures/es-modules/test_node_modules/node_modules/import-require-esm/index.js b/test/fixtures/es-modules/test_node_modules/node_modules/import-require-esm/index.js new file mode 100644 index 00000000000000..918bb5d5597e34 --- /dev/null +++ b/test/fixtures/es-modules/test_node_modules/node_modules/import-require-esm/index.js @@ -0,0 +1,2 @@ +import mod from 'require-esm'; +export default mod; diff --git a/test/fixtures/es-modules/test_node_modules/node_modules/import-require-esm/package.json b/test/fixtures/es-modules/test_node_modules/node_modules/import-require-esm/package.json new file mode 100644 index 00000000000000..07aec65d5a4f31 --- /dev/null +++ b/test/fixtures/es-modules/test_node_modules/node_modules/import-require-esm/package.json @@ -0,0 +1,4 @@ +{ + "type": "module", + "main": "index.js" +} diff --git a/test/fixtures/es-modules/test_node_modules/node_modules/require-esm/index.js b/test/fixtures/es-modules/test_node_modules/node_modules/require-esm/index.js new file mode 100644 index 00000000000000..ca6f0c264ad1fc --- /dev/null +++ b/test/fixtures/es-modules/test_node_modules/node_modules/require-esm/index.js @@ -0,0 +1,2 @@ +module.exports = require('esm'); + diff --git a/test/fixtures/es-modules/test_node_modules/require-esm.js b/test/fixtures/es-modules/test_node_modules/require-esm.js new file mode 100644 index 00000000000000..60ad3f7fff60c6 --- /dev/null +++ b/test/fixtures/es-modules/test_node_modules/require-esm.js @@ -0,0 +1,2 @@ +const { hello } = require('esm'); +console.log(hello); diff --git a/test/fixtures/es-modules/test_node_modules/require-require-esm.js b/test/fixtures/es-modules/test_node_modules/require-require-esm.js new file mode 100644 index 00000000000000..9fe255dce258a6 --- /dev/null +++ b/test/fixtures/es-modules/test_node_modules/require-require-esm.js @@ -0,0 +1,2 @@ +const { hello } = require('require-esm'); +console.log(hello);