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  • Replaces duplicate parse() functions in the raw and text parser that just pass-through the value with a shared passthrough in utils.js
  • Reduces memory overhead when using multiple instances of the same middleware in an application by eliminating function duplication per middleware instance
  • Reduces closure overhead by removing captured parse functions
  • Allows V8 to optimize and potentially inline the function

@Phillip9587 Phillip9587 requested a review from Copilot September 8, 2025 22:28
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Pull Request Overview

This PR optimizes the raw and text parsers by replacing duplicate passthrough parse() functions with a shared utility function. The optimization reduces memory overhead when using multiple middleware instances and eliminates function duplication per instance.

  • Adds a shared passthrough utility function to replace duplicate inline parse functions
  • Updates raw and text parsers to use the shared passthrough function
  • Removes closure overhead by eliminating captured parse functions

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File Description
lib/utils.js Adds shared passthrough utility function and exports it
lib/types/text.js Replaces inline parse function with shared passthrough utility
lib/types/raw.js Replaces inline parse function with shared passthrough utility

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@Phillip9587 Phillip9587 requested a review from a team September 8, 2025 22:28
@UlisesGascon UlisesGascon self-assigned this Sep 9, 2025
@UlisesGascon UlisesGascon merged commit 1fd3222 into expressjs:master Sep 9, 2025
14 checks passed
@Phillip9587 Phillip9587 deleted the optimize-passthrough-parsers branch September 9, 2025 10:22
@UlisesGascon UlisesGascon mentioned this pull request Nov 17, 2025
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2 participants