merge-configs.ts•2.25 kB
import { AnyConfig, ConfigExtension } from './types'
/**
* @param baseConfig Config where other config will be merged into. This object will be mutated.
* @param configExtension Partial config to merge into the `baseConfig`.
*/
export const mergeConfigs = <ClassGroupIds extends string, ThemeGroupIds extends string = never>(
baseConfig: AnyConfig,
{
cacheSize,
prefix,
separator,
experimentalParseClassName,
extend = {},
override = {},
}: ConfigExtension<ClassGroupIds, ThemeGroupIds>,
) => {
overrideProperty(baseConfig, 'cacheSize', cacheSize)
overrideProperty(baseConfig, 'prefix', prefix)
overrideProperty(baseConfig, 'separator', separator)
overrideProperty(baseConfig, 'experimentalParseClassName', experimentalParseClassName)
for (const configKey in override) {
overrideConfigProperties(
baseConfig[configKey as keyof typeof override],
override[configKey as keyof typeof override],
)
}
for (const key in extend) {
mergeConfigProperties(
baseConfig[key as keyof typeof extend],
extend[key as keyof typeof extend],
)
}
return baseConfig
}
const overrideProperty = <T extends object, K extends keyof T>(
baseObject: T,
overrideKey: K,
overrideValue: T[K] | undefined,
) => {
if (overrideValue !== undefined) {
baseObject[overrideKey] = overrideValue
}
}
const overrideConfigProperties = (
baseObject: Partial<Record<string, readonly unknown[]>>,
overrideObject: Partial<Record<string, readonly unknown[]>> | undefined,
) => {
if (overrideObject) {
for (const key in overrideObject) {
overrideProperty(baseObject, key, overrideObject[key])
}
}
}
const mergeConfigProperties = (
baseObject: Partial<Record<string, readonly unknown[]>>,
mergeObject: Partial<Record<string, readonly unknown[]>> | undefined,
) => {
if (mergeObject) {
for (const key in mergeObject) {
const mergeValue = mergeObject[key]
if (mergeValue !== undefined) {
baseObject[key] = (baseObject[key] || []).concat(mergeValue)
}
}
}
}