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Updated internal collation and character set mapping to include the new language-specific utf8mb4 collations added in MySQL Server 8.0.30. (WL #15227)
The minimum required Node.js engine is now v14.0.0. This means that it's not guaranteed that Connector/Node.js will function with older Node.js versions. Previously the minimum version was v12.0.0 which has since reached EOL status (April 2022). (WL #15029)
Added TypeScript support by introducing type definition files that include type declarations for the most relevant parts of the public API. This allows TypeScript applications to seamlessly use Connector/Node.js; and ensures proper support for TypeScript-enabled tooling available on IDEs (such as Visual Studio Code) to provide integrated type hints, contextual auto-completion, and development-time type errors. (WL #14631)
Now ensure that DECIMAL values are returned as JavaScript strings instead of numbers if there's a chance of losing precision. (Bug #34016587)
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Updated the client placeholder assignment logic to ensure that undefined placeholder values are ignored; and to externalize validation tasks to the server where the X Plugin yields errors. Those errors are then relayed to the application in a more consistent feedback loop.
For example, mixing conventions between single placeholder assignment and assignment maps with bind() resulted in the following unexpected error: "TypeError: Cannot read property 'valueOf' of undefined". (Bug #33940584)