38 lines
1.4 KiB
TypeScript
38 lines
1.4 KiB
TypeScript
/**
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* A build is considered as a development build if either the NODE_ENV is
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* environment variable is set to 'development'.
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*
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* NODE_ENV is automatically set to 'development' when we run `yarn dev`. From
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* Next.js docs:
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*
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* > If the environment variable NODE_ENV is unassigned, Next.js automatically
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* assigns development when running the `next dev` command, or production for
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* all other commands.
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*/
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export const isDevBuild = process.env.NODE_ENV === "development";
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/**
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* `true` if we're running in the default global context (aka the main thread)
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* of a web browser.
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*
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* In particular, this is `false` when we're running in a Web Worker,
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* irrespecitve of whether the worker is running in a Node.js context or a web
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* browser context.
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*
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* > We can be running in a browser context either if the user has the page open
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* in a web browser, or if we're the renderer process of an Electron app.
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*
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* Note that this cannot be a constant, otherwise it'll get inlined during SSR
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* with the wrong value.
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*/
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export const haveWindow = () => typeof window !== "undefined";
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/**
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* Return true if we are running in a [Web
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* Worker](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API)
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*
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* Note that this cannot be a constant, otherwise it'll get inlined during SSR
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* with the wrong value.
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*/
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export const inWorker = () => typeof importScripts === "function";
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