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Are the types wrong?

npm run build && npm pack will show this PR fixes the issue.

_vdom: ReturnType<typeof h> | null;
_props: Record<string, unknown>;
};
import { AnyComponent } from 'preact';
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@rschristian rschristian Oct 17, 2025

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No longer a module file, had to move this out

options?: Options
): HTMLElement;

export = register;
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Actual fix

"prepare": "npx simple-git-hooks",
"build": "microbundle -f cjs,es,umd --no-generateTypes",
"lint": "eslint src/*.{js,jsx}",
"lint": "eslint src/*.js",
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ESLint fails if it can't find a single matching file & we have no .jsx files in src/.

Comment on lines -16 to +24
inst._root =
options && options.shadow
? inst.attachShadow({ mode: options.mode || 'open' })
: inst;

if (options && options.adoptedStyleSheets) {
inst._root.adoptedStyleSheets = options.adoptedStyleSheets;
if (options && options.shadow) {
inst._root = inst.attachShadow({ mode: options.mode || 'open' });

if (options.adoptedStyleSheets) {
inst._root.adoptedStyleSheets = options.adoptedStyleSheets;
}
} else {
inst._root = inst;
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Drive-by, TS complains that .adoptedStyleSheets might not be set as it'll only exist if options.shadow is enabled. Nesting these initializations corrects the type issue for 1-2b.

@rschristian rschristian force-pushed the fix/types-node16-resolution branch from 53a4399 to 8f41e93 Compare October 17, 2025 06:03
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github-actions bot commented Oct 17, 2025

Size Change: +3 B (+0.07%)

Total Size: 4.04 kB

Filename Size Change
dist/preact-custom-element.esm.js 1.33 kB +2 B (+0.15%)
dist/preact-custom-element.js 1.32 kB +1 B (+0.08%)
ℹ️ View Unchanged
Filename Size
dist/preact-custom-element.umd.js 1.39 kB

compressed-size-action

@rschristian rschristian force-pushed the fix/types-node16-resolution branch from 9bd5bd0 to 5e6eb49 Compare October 17, 2025 06:22
@rschristian rschristian merged commit 4711c23 into master Oct 17, 2025
2 checks passed
@rschristian rschristian deleted the fix/types-node16-resolution branch October 17, 2025 06:23
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2 participants