Issues

• currentVarScope/currentThisScope walk the scope stack per statement, so deeply nested blocks parse in quadratic time

  acornjs/acorn#1461 · Filter by author tonioloewald opened on Sep 26, 2026
  1

• Quadratic regexp validation for ES2025 duplicate named capture groups

  acornjs/acorn#1445 · Filter by author Str1ckl4nd opened on Jul 2, 2026
  2

• "Runtime Errors for Function Call Assignment Targets" Test262 tests fail

  acornjs/acorn#1398 · Filter by author CanadaHonk opened on Sep 15, 2025
  1

• Replace keyword Regexps with Sets for improved performance

  acornjs/acorn#1342 · Filter by author dmichon-msft opened on Jan 23, 2025

• [acorn] Missing value property in Token (TypeScript)

  acornjs/acorn#1285 · Filter by author e6nlaq opened on Mar 24, 2024
  3

• Latest release is missing type definitions

  acornjs/acorn#1260 · Filter by author dummdidumm opened on Nov 10, 2023
  11

• Add support for spec-compliant decorators

  acornjs/acorn#1228 · Filter by author NullVoxPopuli opened on Jul 25, 2023
  3

• tokenizer fails on an await expression containing a regexp

  acornjs/acorn#989 · Filter by author ascidian opened on Oct 11, 2020
  1

• acorn-walk does not work with injected plugins

  acornjs/acorn#746 · Filter by author kristoferbaxter opened on Oct 16, 2018
  2

• Discussion: Future of test setup

  question
  acornjs/acorn#633 · Filter by author adrianheine opened on Dec 15, 2017
  

• Consider whether parse-less tokenizing is viable in the long run

  acornjs/acorn#589 · Filter by author marijnh opened on Sep 18, 2017
  4

• Allow singling out a particular test

  enhancement
  acornjs/acorn#346 · Filter by author nzakas opened on Oct 28, 2015
  6

• Loose parser fails to parse ArrayExpression on multiple lines

  acornjs/acorn#199 · Filter by author mrennie opened on Jan 14, 2015
  9