Blog post for v0.21 #208
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Blog post for v0.21 #208
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hansl
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Sep 3, 2025
jedel1043
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Sep 4, 2025
blog/boa-release-21/index.md
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| ### Float16 support for TypedArrays, Dataview and Math built-ins | ||
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| This release adds support for `f16` types for the TypedArray, Dataview, and Math | ||
| built-ins. | ||
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| ```javascript | ||
| const x = new Float16Array([37, 42.123456]); | ||
| console.log(x[1]); // 42.125 | ||
| ``` | ||
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| ### Error.isError | ||
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| This release adds support for `Error.isError`, which is accepted for ES2026. | ||
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| ```javascript | ||
| let check = Error.isError(new Error()); // returns true | ||
| ``` | ||
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| ### Math.sumPrecise | ||
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| This release adds support for `Math.sumPrecise`, which is accepted for ES2026. | ||
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| We've opted for using the new [`xsum`](https://crates.io/crates/xsum) summation algorithm | ||
| for the underlying implementation. | ||
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| ```javascript | ||
| let sum = Math.sumPrecise([1e20, 0.1, -1e20]); | ||
| console.log(sum); // 0.1 | ||
| ``` |
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We should potentially group any small spec additions into a separate section. It makes the post look a bit cleaner and avoids having too many header titles
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Updated the features into one section with sub headings. Let me know if you think the subheading should be removed as well.
Co-authored-by: Hans Larsen <[email protected]>
Co-authored-by: Hans Larsen <[email protected]>
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Took a stab at putting together an initial blog post. Feel free to edit and make updates as you see fit :)
This does make an assumption that the
Math.sumPrecisePR is merged before this upcoming release