Upgrade TypeScript to 5.9 #72995
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Upgrade TypeScript to 5.9 #72995
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manzoorwanijk
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Nov 5, 2025
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| const measureWindow = ( | ||
| /** @type {boolean | undefined} */ initRender | ||
| ) => { |
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In this syntax, TypeScript considered the param as required for the function.
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The following accounts have interacted with this PR and/or linked issues. I will continue to update these lists as activity occurs. You can also manually ask me to refresh this list by adding the If you're merging code through a pull request on GitHub, copy and paste the following into the bottom of the merge commit message. To understand the WordPress project's expectations around crediting contributors, please review the Contributor Attribution page in the Core Handbook. |
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Size Change: 0 B Total Size: 2.45 MB ℹ️ View Unchanged
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Flaky tests detected in ecc8edf. 🔍 Workflow run URL: https://github.com/WordPress/gutenberg/actions/runs/19096154478
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What?
TypeScript 5.9 was released in August 2025, let's upgrade.
Why?
How?
Testing Instructions
CI build should be sufficient.
Testing Instructions for Keyboard
Screenshots or screencast