March 2021 (version 1.46.0)

Welcome to the new DeepScan updates. We skipped February release due to the long Lunar New Year Holidays. 2021 is the year of ox. The world is growing and recovering slowly. Let's work hard and stay strong like an ox then we will succeed eventually as oxen do.

Thank you for your continual love and support!

New Rules

The following rules are introduced:

• FUTILE_REGEXP_TEST - Do not use RegExp.prototype.test() on always matching regular expression
• MULTIPLE_RESOLVE_IN_PROMISE_EXECUTOR - Do not call resolve or reject multiple times in a Promise executor
• PROMISE_REJECT_FALL_THROUGH - Do not continue execution after reject in a Promise executor

Analysis Improvements

• Support TypeScript 4.2 abstract constructor signature
• Improve analysis precision of closure variables
• Extend MISUSED_ITERATOR to detect length property accesses

Bug Fixes

• Analyzer may abnormally terminate when a function declaration is used directly as an if body
• Analyzer may abnormally terminate when duplicate variables exist inside a function declared at case body
• Analyzer may abnormally terminate when ESLint no-multiple-empty-lines is enabled and lines containing just spaces exist at the end of a file
• Syntax errors are not reported for non-declrations following TypeScript export declare