Issues

• Transformer: push-in-for-await loops to Array.fromAsync()

  widely available
  codingjoe/esupgrade#217 · Filter by author codingjoe opened on Sep 30, 2026 · Baseline 2024
  1

• Transformer: Promise.resolve().then() to queueMicrotask()

  widely available
  codingjoe/esupgrade#212 · Filter by author codingjoe opened on Sep 30, 2026 · Baseline 2020
  1

• Transformer: regex escaping helpers to RegExp.escape()

  newly available
  codingjoe/esupgrade#211 · Filter by author codingjoe opened on Sep 30, 2026 · Baseline 2025
  1

• Transformer: grouping loops to Object.groupBy()/Map.groupBy()

  widely available
  codingjoe/esupgrade#215 · Filter by author codingjoe opened on Sep 30, 2026 · Baseline 2024
  1

• Transformer: map().flat() to flatMap()

  widely available
  codingjoe/esupgrade#213 · Filter by author codingjoe opened on Sep 30, 2026 · Baseline 2020
  1

• Transformer: byte conversion helpers to Uint8Array base64/hex APIs

  newly available
  codingjoe/esupgrade#145 · Filter by author codingjoe opened on May 12, 2026 · Baseline 2025
  1

• Transformer: Map initialization patterns to getOrInsert APIs

  newly available
  codingjoe/esupgrade#143 · Filter by author codingjoe opened on May 12, 2026 · Baseline 2026
  1

• Transformer: URL parsing/regex routing to URLPattern

  newly available
  codingjoe/esupgrade#140 · Filter by author codingjoe opened on May 12, 2026 · Baseline 2025
  1

• Add Array.findLast/findLastIndex transformer

  widely available
  codingjoe/esupgrade#73 · Filter by author codingjoe opened on Jan 4, 2026 · Baseline 2022
  1