Fix.

node_modules/acorn/bin/run_test262.js

@@ -1,21 +0,0 @@
-const fs = require("fs")
-const path = require("path")
-const run = require("test262-parser-runner")
-const parse = require("..").parse
-
-const unsupportedFeatures = [
-  "BigInt",
-  "class-fields",
-  "class-fields-private",
-  "class-fields-public",
-  "numeric-separator-literal"
-];
-
-run(
-  (content, {sourceType}) => parse(content, {sourceType, ecmaVersion: 10}),
-  {
-    testsDirectory: path.dirname(require.resolve("test262/package.json")),
-    skip: test => (test.attrs.features && unsupportedFeatures.some(f => test.attrs.features.includes(f))),
-    whitelist: fs.readFileSync("./bin/test262.whitelist", "utf8").split("\n").filter(v => v)
-  }
-)