valibot

Many thanks to @ksaurav24, @heiwen, @compulim, @ysknsid25, @alaycock-stripe, @IlyaSemenov, @wszgrcy, @LMGO, @yslpn, @EltonLobo07 and @Eronmmer for contributing to this release.

Read the release notes on our website for a quick overview of the most exciting new features in this release.

• Add isoDateTimeSecond validation action to validate ISO date times with seconds (pull request #1418)

• Add toCamelCase, toKebabCase, toPascalCase and toSnakeCase transformation actions to convert strings between common naming conventions (pull request #1457)

• Change internal ReadonlyOutputKeys and OutputWithReadonly types of object schemas and WithReadonly type of record schemas to improve TypeScript type performance (pull request #1442)

• Change hot paths to reduce object allocations and improve runtime performance (pull request #1437)

• Change build target to ES2020 so distributed output stays compatible with environments that lack support for newer syntax (pull request #1455)

• Change internal _LruCache to use a TypeScript private method instead of a #private class field to avoid runtime helpers in the transpiled output (pull request #1455)

• Change internal _isValidObjectKey to use Object.prototype.hasOwnProperty.call instead of Object.hasOwn so the distributed output stays compatible with runtimes that lack the ES2022 Object.hasOwn builtin (pull request #1421)

• Change flatten method to accept readonly issue arrays (pull request #1269)

• Fix potential RangeError caused by spreading large issue arrays (pull request #1437)

• Fix creditCard validation action to reject Mastercard numbers with invalid lengths (pull request #1462)

• Fix intersect schema to no longer mutate input values, allowing frozen objects and arrays to be merged (pull request #1463)