26 lines
1.0 KiB
TypeScript
26 lines
1.0 KiB
TypeScript
/**
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* Deeply injects environment variables into a configuration object/string/json
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*
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* Uses VSCode env:name pattern: https://code.visualstudio.com/docs/reference/variables-reference#_environment-variables
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*
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* Does not mutate original object
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*/
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export async function injectEnv<C extends string | Record<PropertyKey, any>>(config: C, notFoundValue: any = "") {
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// Use simple regex replace for now, will see if object traversal and recursion is needed here (e.g: for non-serializable objects)
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const isObject = typeof config === "object"
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let _config: string = isObject ? JSON.stringify(config) : config
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_config = _config.replace(/\$\{env:([\w]+)\}/g, (_, name) => {
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// Check if null or undefined
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// intentionally using == to match null | undefined
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if (process.env[name] == null) {
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console.warn(`[injectEnv] env variable ${name} referenced but not found in process.env`)
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}
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return process.env[name] ?? notFoundValue
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})
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return (isObject ? JSON.parse(_config) : _config) as C extends string ? string : C
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}
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