polyfill-symbol-metadata

A polyfill for Symbol.metadata to support @tc39/proposal-decorator-metadata

These packages are only temporary for _stage 3_ of decorators until TC39 officially supports decorators.

Usage

``typescript
import "polyfill-symbol-metadata";

function meta(key, value) {
return (_, context) => {
context.metadata[key] = value;
};
}

@meta("a", "x")
class C {
@meta("b", "y")
m() {}
}

C[Symbol.metadata].a; // 'x'
C[Symbol.metadata].b; // 'y'
``

REF

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Relative issues

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