| 1 | import type { ConfigPath, ConfigPathSegment, ConfigValue } from '../types' |
| 2 | |
| 3 | export function isRecord(value: unknown): value is Record<string, unknown> { |
| 4 | return typeof value === 'object' && value !== null && !Array.isArray(value) |
| 5 | } |
| 6 | |
| 7 | export function getValueAtPath(source: unknown, path: ConfigPath) { |
| 8 | return path.reduce<unknown>((current, segment) => { |
| 9 | if (current == null) |
| 10 | return undefined |
| 11 | |
| 12 | if (Array.isArray(current) && typeof segment === 'number') |
| 13 | return current[segment] |
| 14 | |
| 15 | if (isRecord(current) && typeof segment === 'string') |
| 16 | return current[segment] |
| 17 | |
| 18 | return undefined |
| 19 | }, source) |
| 20 | } |
| 21 | |
| 22 | function cloneContainer(current: unknown, nextSegment: ConfigPathSegment) { |
| 23 | if (Array.isArray(current)) |
| 24 | return [...current] |
| 25 | if (isRecord(current)) |
| 26 | return { ...current } |
| 27 | return typeof nextSegment === 'number' ? [] : {} |
| 28 | } |
| 29 | |
| 30 | function setValueRecursive(current: unknown, path: ConfigPath, value: ConfigValue, index: number): ConfigValue { |
| 31 | const segment = path[index] |
| 32 | if (segment === undefined) |
| 33 | return value |
| 34 | |
| 35 | const nextSegment = path[index + 1] |
| 36 | const container = cloneContainer(current, nextSegment) |
| 37 | |
| 38 | if (Array.isArray(container) && typeof segment === 'number') { |
| 39 | container[segment] = setValueRecursive(container[segment], path, value, index + 1) |
| 40 | return container |
| 41 | } |
| 42 | |
| 43 | if (isRecord(container) && typeof segment === 'string') { |
| 44 | container[segment] = setValueRecursive(container[segment], path, value, index + 1) |
| 45 | return container |
| 46 | } |
| 47 | |
| 48 | return container |
| 49 | } |
| 50 | |
| 51 | export function setValueAtPath<T extends Record<string, unknown>>(source: T, path: ConfigPath, value: ConfigValue): T { |
| 52 | const nextValue = setValueRecursive(source, path, value, 0) |
| 53 | return isRecord(nextValue) ? nextValue as T : source |
| 54 | } |
| 55 | |
| 56 | export function joinPath(path: ConfigPath) { |
| 57 | return path.join('.') |
| 58 | } |
| 59 | |
| 60 | export function formatConfigKey(key: string) { |
| 61 | return key |
| 62 | .replace(/([a-z0-9])([A-Z])/g, '$1 $2') |
| 63 | .replace(/[-_]/g, ' ') |
| 64 | .replace(/\b\w/g, char => char.toUpperCase()) |
| 65 | } |
| 66 | |
| 67 | export function createEmptyValue(sample: unknown): ConfigValue { |
| 68 | if (typeof sample === 'number') |
| 69 | return 0 |
| 70 | if (typeof sample === 'boolean') |
| 71 | return false |
| 72 | if (typeof sample === 'string') |
| 73 | return '' |
| 74 | if (Array.isArray(sample)) |
| 75 | return [] |
| 76 | if (isRecord(sample)) { |
| 77 | return Object.fromEntries(Object.entries(sample).map(([key, value]): [string, ConfigValue] => [key, createEmptyValue(value)])) |
| 78 | } |
| 79 | return '' |
| 80 | } |
| 81 | |
| 82 | export function stableStringify(value: unknown) { |
| 83 | return JSON.stringify(value, (_key, nestedValue: unknown) => { |
| 84 | if (!isRecord(nestedValue)) |
| 85 | return nestedValue |
| 86 | |
| 87 | return Object.keys(nestedValue) |
| 88 | .sort() |
| 89 | .reduce<Record<string, unknown>>((result, key) => { |
| 90 | result[key] = nestedValue[key] |
| 91 | return result |
| 92 | }, {}) |
| 93 | }) |
| 94 | } |
| 95 |