\r\nImplement the decorator metadata proposal (#3760)
\r\nThis release implements the decorator\r\nmetadata proposal, which is a sub-proposal of the decorators\r\nproposal. Microsoft shipped the decorators proposal in TypeScript\r\n5.0 and the decorator metadata proposal in TypeScript\r\n5.2, so it's important that esbuild also supports both of these\r\nfeatures. Here's a quick example:
\r\n// Shim the "Symbol.metadata" symbol\r\nSymbol.metadata ??= Symbol('Symbol.metadata')\r\nconst track = (_, context) => {\r\n(context.metadata.names ||= []).push(context.name)\r\n}
\r\nclass Foo {\r\n@track foo = 1\r\n@track bar = 2\r\n}
\r\n// Prints ["foo", "bar"]\r\nconsole.log(Foo[Symbol.metadata].names)\r\n
\r\n⚠️ WARNING ⚠️
\r\nThis proposal has been marked as "stage 3" which means\r\n"recommended for implementation". However, it's still a work\r\nin progress and isn't a part of JavaScript yet, so keep in mind that any\r\ncode that uses JavaScript decorator metadata may need to be updated as\r\nthe feature continues to evolve. If/when that happens, I will update\r\nesbuild's implementation to match the specification. I will not be\r\nsupporting old versions of the specification.
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