wehub-resource-sync
30 lines
1.2 KiB
Plaintext
30 lines
1.2 KiB
Plaintext
---
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title: "Emit Decorator Metadata"
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sidebarTitle: "emitDecoratorMetadata"
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description: "Use the emitDecoratorMetadata build extension to enable support for the emitDecoratorMetadata TypeScript compiler option"
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---
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If you need support for the `emitDecoratorMetadata` typescript compiler option, import the `emitDecoratorMetadata` build extension and use it in your `trigger.config.ts` file:
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```ts
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import { defineConfig } from "@trigger.dev/sdk";
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import { emitDecoratorMetadata } from "@trigger.dev/build/extensions/typescript";
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export default defineConfig({
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project: "<project ref>",
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// Your other config settings...
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build: {
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extensions: [emitDecoratorMetadata()],
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},
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});
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```
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This is usually required if you are using certain ORMs, like TypeORM, that require this option to be enabled. It's not enabled by default because there is a performance cost to enabling it.
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<Note>
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emitDecoratorMetadata works by hooking into the esbuild bundle process and using the TypeScript
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compiler API to compile files where we detect the use of decorators. This means you must have
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`emitDecoratorMetadata` enabled in your `tsconfig.json` file, as well as `typescript` installed in
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your `devDependencies`.
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</Note>
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