flow-parser - npm Package Compare versions

Comparing version 0.324.0 to 0.325.0

babel-plugin.js

+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+
+'use strict';
+
+// This file ships as-is (it is not run through the `dist` build), so it must be
+// runtime-valid CommonJS. Flow types are written in comment syntax accordingly.
+
+/*:: import type {ParserOptions} from 'flow-parser'; */
+
+const FlowParser = require('flow-parser');
+
+/*::
+type Options = {
+  // When set to 'flow', will check files for a `@flow` annotation to apply
+  // this plugin, otherwise falling back to Babel's parser.
+  //
+  // This is independent of `parserOpts.flow`, which may customise 'detect'
+  // behaviour within hermes-parser (downstream from this plugin).
+  //
+  // Defaults to 'all'.
+  parseLangTypes?: 'flow' | 'all',
+};
+*/
+
+module.exports = function BabelPluginSyntaxFlowParser(
+  // $FlowExpectedError[unclear-type] We don't have types for this.
+  api /*: any */,
+  options /*: Options */,
+) /*: Readonly<{...}> */ {
+  api.assertVersion('^7.0.0 || ^8.0.0-alpha.6');
+
+  const {parseLangTypes = 'all'} = options;
+
+  let curParserOpts /*: ParserOptions */ = {};
+  let curFilename /*: ?string */ = null;
+
+  return {
+    name: 'syntax-flow-parser',
+
+    manipulateOptions(
+      opts /*: Readonly<{parserOpts: ParserOptions, filename?: ?string}> */,
+    ) {
+      curParserOpts = opts.parserOpts;
+      curFilename = opts.filename;
+    },
+
+    // API suggested via https://babeljs.io/docs/babel-parser#will-the-babel-parser-support-a-plugin-system
+    parserOverride(code /*: string */) {
+      const filename = curFilename;
+      if (
+        filename != null &&
+        (filename.endsWith('.ts') || filename.endsWith('.tsx'))
+      ) {
+        return;
+      }
+
+      const parserOpts /*: ParserOptions */ = {};
+      for (const [key, value] of Object.entries(curParserOpts)) {
+        if (FlowParser.ParserOptionsKeys.has(key)) {
+          // $FlowExpectedError[incompatible-type]
+          parserOpts[key] = value;
+        }
+      }
+
+      if (parseLangTypes === 'flow' && !/@flow/.test(code)) {
+        return;
+      }
+
+      if (parseLangTypes === 'all' && parserOpts.flow == null) {
+        parserOpts.flow = 'all';
+      }
+
+      return FlowParser.parse(code, {
+        ...parserOpts,
+        babel: true,
+      });
+    },
+
+    pre() {
+      curParserOpts = {};
+    },
+  };
+};

package.json

 {
   "name": "flow-parser",
-  "version": "0.324.0",
+  "version": "0.325.0",
   "description": "JavaScript parser written in OCaml. Produces ESTree AST",
@@ -12,2 +12,3 @@ "homepage": "https://flow.org",
   "files": [
+    "babel-plugin.js",
     "dist",
@@ -26,3 +27,3 @@ "README.md"
   "dependencies": {
-    "flow-estree": "0.324.0"
+    "flow-estree": "0.325.0"
   },
@@ -29,0 +30,0 @@ "devDependencies": {

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Improved metrics

Total package byte prevSize

1310968

0.19%

Number of package files

56

1.82%

Lines of code

6441

1.18%

Dependency changes

• + Added

  flow-estree@0.325.0
  (transitive)

• - Removed

  flow-estree@0.324.0
  (transitive)

• Updated

  flow-estree@0.325.0