env.ts — vite Source File

Architecture documentation for env.ts, a typescript file in the vite codebase.

File typescript HMRClient HotRuntime 1 functions 1 classes

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HMRClient→ HotRuntime→ env.ts — vite Source File

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Source Code

declare const __DEFINES__: Record<string, any>

const context = (() => {
  if (typeof globalThis !== 'undefined') {
    return globalThis
  } else if (typeof self !== 'undefined') {
    return self
  } else if (typeof window !== 'undefined') {
    return window
  } else {
    return Function('return this')()
  }
})()

// assign defines
const defines = __DEFINES__
Object.keys(defines).forEach((key) => {
  const segments = key.split('.')
  let target = context
  for (let i = 0; i < segments.length; i++) {
    const segment = segments[i]
    if (i === segments.length - 1) {
      target[segment] = defines[key]
    } else {
      target = target[segment] || (target[segment] = {})
    }
  }
})