feat(transformer): add features ES2018NamedCapturingGroupsRegex and ES2018LookbehindRegex (#7182)

crates/oxc_transformer/src/options/env.rs

@@ -190,10 +190,8 @@ impl TryFrom<BabelEnvOptions> for EnvOptions {
                 unicode_property_escapes: o.can_enable(ES2018UnicodePropertyRegex),
                 dot_all_flag: o.can_enable(ES2018DotallRegex),
                 named_capture_groups: o.can_enable(ES2018NamedCapturingGroupsRegex),
-                // FIXME
+                look_behind_assertions: o.can_enable(ES2018LookbehindRegex),
-                look_behind_assertions: false, // o.can_enable("esbuild-regexp-lookbehind-assertions"),
+                match_indices: o.can_enable(ES2022MatchIndicesRegex),
-                // FIXME
-                match_indices: false, // o.can_enable("esbuild-regexp-match-indices"),
                 set_notation: o.can_enable(ES2024UnicodeSetsRegex),
             },
             es2015: ES2015Options {

crates/oxc_transformer/src/options/es_features.rs

@@ -35,6 +35,7 @@ pub enum ESFeature {
     ES2018NamedCapturingGroupsRegex,
     ES2018UnicodePropertyRegex,
     ES2018DotallRegex,
+    ES2018LookbehindRegex,
     ES2018ObjectRestSpread,
     ES2018AsyncGeneratorFunctions,
     ES2018OptionalCatchBinding,
@@ -47,6 +48,7 @@ pub enum ESFeature {
     ES2022ClassProperties,
     ES2022PrivatePropertyInObject,
     ES2022ClassStaticBlock,
+    ES2022MatchIndicesRegex,
     ES2024UnicodeSetsRegex,
     ES2025RegexpModifiers,
     ES2025DuplicateNamedCapturingGroupsRegex,
@@ -539,6 +541,22 @@ pub fn features() -> &'static FxHashMap<ESFeature, EngineTargets> {
                     (Edge, Version(79u32, 0u32, 0u32)),
                 ])),
             ),
+            (
+                ES2018LookbehindRegex,
+                EngineTargets::new(FxHashMap::from_iter([
+                    (Chrome, Version(62u32, 0u32, 0u32)),
+                    (Safari, Version(16u32, 4u32, 0u32)),
+                    (OperaMobile, Version(46u32, 0u32, 0u32)),
+                    (Samsung, Version(8u32, 0u32, 0u32)),
+                    (Node, Version(8u32, 10u32, 0u32)),
+                    (Firefox, Version(78u32, 0u32, 0u32)),
+                    (Deno, Version(1u32, 0u32, 0u32)),
+                    (Electron, Version(3u32, 0u32, 0u32)),
+                    (Opera, Version(49u32, 0u32, 0u32)),
+                    (Ios, Version(16u32, 4u32, 0u32)),
+                    (Edge, Version(79u32, 0u32, 0u32)),
+                ])),
+            ),
             (
                 ES2018ObjectRestSpread,
                 EngineTargets::new(FxHashMap::from_iter([
@@ -733,6 +751,22 @@ pub fn features() -> &'static FxHashMap<ESFeature, EngineTargets> {
                     (Edge, Version(94u32, 0u32, 0u32)),
                 ])),
             ),
+            (
+                ES2022MatchIndicesRegex,
+                EngineTargets::new(FxHashMap::from_iter([
+                    (Chrome, Version(90u32, 0u32, 0u32)),
+                    (Safari, Version(15u32, 0u32, 0u32)),
+                    (OperaMobile, Version(64u32, 0u32, 0u32)),
+                    (Samsung, Version(15u32, 0u32, 0u32)),
+                    (Node, Version(16u32, 0u32, 0u32)),
+                    (Firefox, Version(91u32, 0u32, 0u32)),
+                    (Deno, Version(1u32, 8u32, 0u32)),
+                    (Electron, Version(13u32, 0u32, 0u32)),
+                    (Opera, Version(76u32, 0u32, 0u32)),
+                    (Ios, Version(15u32, 0u32, 0u32)),
+                    (Edge, Version(90u32, 0u32, 0u32)),
+                ])),
+            ),
             (
                 ES2024UnicodeSetsRegex,
                 EngineTargets::new(FxHashMap::from_iter([

tasks/compat_data/README.md

@@ -1 +1,12 @@
+# Compat Data
+
+Get engine compatibility Data from https://github.com/compat-table/compat-table/
+
 Code extracted from https://github.com/babel/babel/tree/main/packages/babel-compat-data
+
+## Adding a new feature
+
+- Find the feature from https://github.com/compat-table/compat-table/blob/gh-pages/data-es2016plus.js
+- Add the feature in `./es-features.js`
+- `pnpm install`
+- `cargo run -p oxc_compat_data`

tasks/compat_data/build.js

@@ -59,7 +59,6 @@ const getLowestImplementedVersion = (
     ok &&= !exclude(test.name);
     return ok;
   });
-
   const envTests = tests.map(({ res }) => {
     const versions = envsVersions[env];
     let i = versions.length - 1;
@@ -110,7 +109,6 @@ const generateData = (environments, items) => {
     item.targets = targets;
   }
 
-  console.log(items);
   return items;
 };
 

tasks/compat_data/data.json

@@ -652,6 +652,27 @@
       "electron": "3.0"
     }
   },
+  {
+    "name": "LookbehindRegex",
+    "babel": null,
+    "features": [
+      "RegExp Lookbehind Assertions"
+    ],
+    "es": "ES2018",
+    "targets": {
+      "chrome": "62",
+      "opera": "49",
+      "edge": "79",
+      "firefox": "78",
+      "safari": "16.4",
+      "node": "8.10",
+      "deno": "1",
+      "ios": "16.4",
+      "samsung": "8",
+      "opera_mobile": "46",
+      "electron": "3.0"
+    }
+  },
   {
     "name": "ObjectRestSpread",
     "babel": "transform-object-rest-spread",
@@ -910,6 +931,27 @@
       "electron": "15.0"
     }
   },
+  {
+    "name": "MatchIndicesRegex",
+    "babel": null,
+    "features": [
+      "RegExp Match Indices (`hasIndices` / `d` flag) / constructor supports it"
+    ],
+    "es": "ES2022",
+    "targets": {
+      "chrome": "90",
+      "opera": "76",
+      "edge": "90",
+      "firefox": "91",
+      "safari": "15",
+      "node": "16",
+      "deno": "1.8",
+      "ios": "15",
+      "samsung": "15",
+      "opera_mobile": "64",
+      "electron": "13.0"
+    }
+  },
   {
     "name": "UnicodeSetsRegex",
     "babel": "transform-unicode-sets-regex",

tasks/compat_data/es-features.js

@@ -201,6 +201,11 @@ const es2018 = [
     babel: 'transform-dotall-regex',
     features: ['s (dotAll) flag for regular expressions'],
   },
+  {
+    name: 'LookbehindRegex',
+    babel: null,
+    features: ['RegExp Lookbehind Assertions'],
+  },
   {
     name: 'ObjectRestSpread',
     babel: 'transform-object-rest-spread',
@@ -279,6 +284,14 @@ const es2022 = [
     babel: 'transform-class-static-block',
     features: ['Class static initialization blocks'],
   },
+  {
+    name: 'MatchIndicesRegex',
+    babel: null,
+    features: [
+      'RegExp Match Indices (`hasIndices` / `d` flag) / constructor supports it',
+      // ignore "shows up in flags"
+    ],
+  },
 ].map(f('ES2022'));
 
 const es2024 = [

tasks/compat_data/src/main.rs

@@ -1,5 +1,21 @@
+#![allow(clippy::print_stdout)]
+use std::process::Command;
+
 use oxc_compat_data::generate;
+use oxc_tasks_common::project_root;
 
 fn main() {
+    let cwd = project_root().join("tasks/compat_data");
+
+    if !cwd.join("compat-table").exists() {
+        println!("Cloning compat-table ...");
+        Command::new("pnpm").current_dir(&cwd).args(["run", "init"]).output().unwrap();
+    }
+
+    let output = Command::new("pnpm").current_dir(cwd).args(["run", "build"]).output().unwrap();
+    if !output.status.success() {
+        println!("{}", String::from_utf8(output.stderr).unwrap());
+    }
+
     generate();
 }

tasks/transform_conformance/snapshots/oxc.snap.md

@@ -1,6 +1,6 @@
 commit: d20b314c
 
-Passed: 77/87
+Passed: 78/87
 
 # All Passed:
 * babel-plugin-transform-class-static-block
@@ -12,6 +12,7 @@ Passed: 77/87
 * babel-plugin-transform-arrow-functions
 * babel-preset-typescript
 * babel-plugin-transform-react-jsx-source
+* regexp
 
 
 # babel-plugin-transform-typescript (2/9)
@@ -175,8 +176,3 @@ x Output mismatch
 x Output mismatch
 
 
-# regexp (7/8)
-* all-regex-plugins-enabled-by-targets/input.js
-x Output mismatch
-
-