63 lines
1.9 KiB
TypeScript
63 lines
1.9 KiB
TypeScript
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import type { JsonValue } from './types';
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export function isJsonValue(value: unknown): value is JsonValue {
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if (
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value === null
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|| typeof value === 'string'
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|| typeof value === 'boolean'
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) {
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return true;
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}
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if (typeof value === 'number') return Number.isFinite(value);
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if (Array.isArray(value)) return value.every(isJsonValue);
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if (!value || typeof value !== 'object') return false;
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return Object.values(value).every(isJsonValue);
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}
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/** Normalize in-memory model values exactly as the encrypted JSON payload does. */
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export function normalizeJsonValue(value: unknown): JsonValue {
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const serialized = JSON.stringify(value);
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if (serialized === undefined) {
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throw new TypeError('Value cannot be represented as JSON');
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}
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const normalized: unknown = JSON.parse(serialized);
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if (!isJsonValue(normalized)) {
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throw new TypeError('Value cannot be represented as JSON');
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}
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return normalized;
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}
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export function cloneJson<T extends JsonValue>(value: T): T {
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if (Array.isArray(value)) {
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return value.map((item) => cloneJson(item)) as T;
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}
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if (value && typeof value === 'object') {
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return Object.fromEntries(
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Object.entries(value).map(([key, nested]) => [key, cloneJson(nested)]),
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) as T;
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}
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return value;
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}
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export function canonicalizeJson<T extends JsonValue>(value: T): T {
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if (Array.isArray(value)) {
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return value.map((item) => canonicalizeJson(item)) as T;
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}
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if (value && typeof value === 'object') {
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return Object.fromEntries(
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Object.keys(value)
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.sort()
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.map((key) => [key, canonicalizeJson(value[key])]),
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) as T;
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}
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return value;
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}
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export function canonicalJsonString(value: JsonValue): string {
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return JSON.stringify(canonicalizeJson(value));
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}
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export function jsonValuesEqual(left: JsonValue, right: JsonValue): boolean {
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return canonicalJsonString(left) === canonicalJsonString(right);
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}
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