Merge pull request #40 from rwjblue/update-babel-parser

Quick fix for pipelineOperator issue in recast

Author: rwjblue

package.json

@@ -17,7 +17,7 @@
     "test": "qunit tests/**/*-test.js"
   },
   "dependencies": {
-    "@babel/parser": "^7.0.0-beta.51",
+    "@babel/parser": "^7.0.0-beta.53",
     "chalk": "^2.4.1",
     "common-tags": "^1.8.0",
     "execa": "^0.10.0",

src/transform-support.js

@@ -2,7 +2,22 @@
 
 function getJSCodeshiftParser(api) {
   try {
-    let parser = require('recast/parsers/typescript');
+    // this is bad, but works around a bug in recent @babel/parser versions:
+    let babelParser = require('@babel/parser');
+    let parser = {
+      parse(source, _options) {
+        let options = require('recast/parsers/_babylon_options')(_options);
+        options.plugins = options.plugins.filter(plugin => plugin !== 'pipelineOperator');
+        options.plugins.push(['pipelineOperator', { proposal: 'minimal' }]);
+        options.plugins.push('typescript');
+
+        return babelParser.parse(source, options);
+      },
+    };
+
+    // the above should be replace with the following (once
+    // https://github.com/benjamn/recast/pull/521 lands in a release):
+    // let parser = require('recast/parsers/typescript');
 
     return api.jscodeshift.withParser(parser);
   } catch (e) {

yarn.lock

@@ -17,8 +17,8 @@
     js-tokens "^3.0.0"
 
 "@babel/parser@^7.0.0-beta.51":
-  version "7.0.0-beta.51"
-  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.0.0-beta.51.tgz#27cec2df409df60af58270ed8f6aa55409ea86f6"
+  version "7.0.0-beta.53"
+  resolved "https://registry.yarnpkg.com/@babel/parser/-/parser-7.0.0-beta.53.tgz#1f45eb617bf9463d482b2c04d349d9e4edbf4892"
 
 "@mrmlnc/readdir-enhanced@^2.2.1":
   version "2.2.1"