58 lines
1.9 KiB
TypeScript
58 lines
1.9 KiB
TypeScript
import { z } from '@/deps.ts';
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/** Validates individual items in an array, dropping any that aren't valid. */
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function filteredArray<T extends z.ZodTypeAny>(schema: T) {
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return z.any().array().catch([])
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.transform((arr) => (
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arr.map((item) => {
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const parsed = schema.safeParse(item);
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return parsed.success ? parsed.data : undefined;
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}).filter((item): item is z.infer<T> => Boolean(item))
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));
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}
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const jsonSchema = z.string().transform((value, ctx) => {
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try {
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return JSON.parse(value) as unknown;
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} catch (_e) {
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ctx.addIssue({ code: z.ZodIssueCode.custom, message: 'Invalid JSON' });
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return z.NEVER;
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}
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});
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/** Alias for `safeParse`, but instead of returning a success object it returns the value (or undefined on fail). */
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function parseValue<T>(schema: z.ZodType<T>, value: unknown): T | undefined {
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const result = schema.safeParse(value);
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return result.success ? result.data : undefined;
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}
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const parseRelay = (relay: string | URL) => parseValue(relaySchema, relay);
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const relaySchema = z.custom<URL>((relay) => {
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if (typeof relay !== 'string') return false;
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try {
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const { protocol } = new URL(relay);
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return protocol === 'wss:' || protocol === 'ws:';
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} catch (_e) {
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return false;
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}
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});
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const emojiTagSchema = z.tuple([z.literal('emoji'), z.string(), z.string().url()]);
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/** https://developer.mozilla.org/en-US/docs/Glossary/Base64#the_unicode_problem */
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const decode64Schema = z.string().transform((value, ctx) => {
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try {
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const binString = atob(value);
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const bytes = Uint8Array.from(binString, (m) => m.codePointAt(0)!);
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return new TextDecoder().decode(bytes);
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} catch (_e) {
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ctx.addIssue({ code: z.ZodIssueCode.custom, message: 'Invalid base64', fatal: true });
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return z.NEVER;
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}
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});
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const hashtagSchema = z.string().regex(/^\w{1,30}$/);
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export { decode64Schema, emojiTagSchema, filteredArray, hashtagSchema, jsonSchema, parseRelay, relaySchema };
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