Only allow passing functions to lifecycle methods like onMount. #5529
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We could also add that instead of "any", the |
The problem is that it risks breaking existing code. There will be no working code that passes in something else than a function, but there can easily be code that passes in a function with a return value. |
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This has been released in 3.29.1, thanks! |
hontas
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* upstream/master: (140 commits) support $$props and $$restProps for custom elements (sveltejs#5608) Bump eslint-config to 5.5.0 (sveltejs#5599) update changelog add Node and Element as known globals (sveltejs#5601) docs: fix a11y warning in media elements example (sveltejs#5606) Curly braces linting fixes (sveltejs#5585) refactor sourcemap and preprocessor tests (sveltejs#5583) -> v3.29.4 fix code generation error with nullish coalescing operator and logical operators (sveltejs#5564) -> v3.29.3 -> v3.29.2 -> v3.29.1 docs: fix a11y warning in media elements tutorial (sveltejs#5523) update changelog get context at start of {#if} update block instead of at the end (sveltejs#5531) update changelog only allow passing functions to lifecycle functions (sveltejs#5529) update changelog fix compiler hanging on <slot slot="..."> (sveltejs#5536) Add svelte@next caveat to bug report template (sveltejs#5561) ...
taylorzane
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Changing the parameter of
onMountetc to take a function rather thanany. I accidentally passed an evaluated function rather than the function itself in my TypeScript Sapper project and that gave a runtime rather than a compile-time error.If I understand it right,
types.d.tsis created from this file which in turn is used by the Sapper type definitions.