useDynamicConfig.ts

hooks/useDynamicConfig.ts

No strong subsystem tag

Lines

703

Bytes

Exports

Imports

Keywords

What this is

This page documents one file from the repository and includes its full source so you can read it without leaving the docs site.

Beginner explanation

This file is one piece of the larger system. Its name, directory, imports, and exports show where it fits. Start by reading the exports and related files first.

How it is used

Start from the exports list and related files. Those are the easiest clues for where this file fits into the system.

Expert explanation

Architecturally, this file intersects with general runtime concerns. It contains 23 lines, 2 detected imports, and 1 detected exports.

Important relationships

Detected exports

useDynamicConfig

Keywords

reactdefaultvalueconfignamegetdynamicconfig_blocks_on_inithookconfigthenwhenconfigvaluesetconfigvalue

Detected imports

react
../services/analytics/growthbook.js

Source notes

This page embeds the full file contents. Small or leaf files are still indexed honestly instead of being over-explained.

Open parent directory

Full source

import React from 'react'
import { getDynamicConfig_BLOCKS_ON_INIT } from '../services/analytics/growthbook.js'

/**
 * React hook for dynamic config values.
 * Returns the default value initially, then updates when the config is fetched.
 */
export function useDynamicConfig<T>(configName: string, defaultValue: T): T {
  const [configValue, setConfigValue] = React.useState<T>(defaultValue)

  React.useEffect(() => {
    if (process.env.NODE_ENV === 'test') {
      // Prevents a test hang when using this hook in tests
      return
    }
    void getDynamicConfig_BLOCKS_ON_INIT<T>(configName, defaultValue).then(
      setConfigValue,
    )
  }, [configName, defaultValue])

  return configValue
}