assert: create internal/assert micro-module

Trott · Trott · commit 5d609bb11c4c · 2019-02-08T00:01:09.000-08:00
For use in built-in modules that could benefit from `assert()` without having to load the entire module (unless an AssertionError actually occurs): lib/internal/assert.js. PR-URL: nodejs#25956 Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Minwoo Jung <minwoo@nodesource.com>
diff --git a/lib/internal/assert.js b/lib/internal/assert.js
@@ -0,0 +1,9 @@
+'use strict';
+
+function assert(value, message) {
+  if (!value) {
+    require('assert')(value, message);
+  }
+}
+
+module.exports = assert;
diff --git a/node.gyp b/node.gyp
@@ -85,6 +85,7 @@
       'lib/vm.js',
       'lib/worker_threads.js',
       'lib/zlib.js',
+      'lib/internal/assert.js',
       'lib/internal/assert/assertion_error.js',
       'lib/internal/async_hooks.js',
       'lib/internal/buffer.js',
diff --git a/test/parallel/test-internal-assert.js b/test/parallel/test-internal-assert.js
@@ -0,0 +1,15 @@
+// Flags: --expose-internals
+'use strict';
+
+require('../common');
+
+const assert = require('assert');
+const internalAssert = require('internal/assert');
+
+// Should not throw.
+internalAssert(true);
+internalAssert(true, 'fhqwhgads');
+
+assert.throws(() => { internalAssert(false); }, assert.AssertionError);
+assert.throws(() => { internalAssert(false, 'fhqwhgads'); },
+              { code: 'ERR_ASSERTION', message: 'fhqwhgads' });
