feat(langs-precompiled): mark EmulatedRegExp as pure

Author: antfu

Diff for: packages/langs-precompiled/scripts/__snapshots__/precompile.test.ts.snap

@@ -91,9 +91,11 @@ exports[`precompile 1`] = `
           ],
         },
       },
-      end: new EmulatedRegExp("(?<=^|\\\\n(?!$))(?=\\\\P{space})|(?!^)", "dgv", {
-        strategy: "search_start_clip",
-      }),
+      end: /*@__PURE__*/ new EmulatedRegExp(
+        "(?<=^|\\\\n(?!$))(?=\\\\P{space})|(?!^)",
+        "dgv",
+        { strategy: "search_start_clip" },
+      ),
       patterns: [
         {
           begin: /(?<=^|\\n(?!$))([ ]+)(?! )/dgv,
@@ -112,7 +114,7 @@ exports[`precompile 1`] = `
       beginCaptures: {
         "1": { name: "punctuation.whitespace.comment.leading.yaml" },
       },
-      end: new EmulatedRegExp("(?!^)", "dgv", {
+      end: /*@__PURE__*/ new EmulatedRegExp("(?!^)", "dgv", {
         strategy: "search_start_clip",
       }),
       patterns: [
@@ -377,7 +379,7 @@ exports[`precompile 1`] = `
     node: { patterns: [{ include: "#block-node" }] },
     property: {
       begin: /(?=!|&)/dgv,
-      end: new EmulatedRegExp("(?!^)", "dgv", {
+      end: /*@__PURE__*/ new EmulatedRegExp("(?!^)", "dgv", {
         strategy: "search_start_clip",
       }),
       name: "meta.property.yaml",

Diff for: packages/langs-precompiled/scripts/langs.ts

@@ -126,7 +126,7 @@ export function toJsLiteral(value: any, seen = new Set()): string {
   }
 
   if (value instanceof EmulatedRegExp) {
-    return `new EmulatedRegExp(${JSON.stringify(value.rawArgs.pattern)},${JSON.stringify(value.rawArgs.flags)},${JSON.stringify(value.rawArgs.options)})`
+    return `/*@__PURE__*/ new EmulatedRegExp(${JSON.stringify(value.rawArgs.pattern)},${JSON.stringify(value.rawArgs.flags)},${JSON.stringify(value.rawArgs.options)})`
   }
 
   // RegExp