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Validator for taking camelcase or snake case inputs and converting them to a consistent type checked value.
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| import * as z from "zod"; | |
| const camelToSnakeCase = (str: string) => | |
| str.replace(/[A-Z]/g, (letter) => `_${letter.toLowerCase()}`); | |
| const validActions = ["HELLO_THERE"] as const; | |
| const ValidActionsSchema = z.enum(validActions); | |
| const ParseableSchema = z.object({ | |
| action: z.string().transform((value, ctx) => { | |
| const transformed = value.includes("_") ? value: camelToSnakeCase(value).toUpperCase(); | |
| const result = ValidActionsSchema.safeParse(transformed); | |
| if (!result.success) { | |
| result.error.issues.forEach((issue) => { | |
| ctx.addIssue(issue); | |
| }); | |
| return z.NEVER; | |
| } | |
| return result.data; | |
| }), | |
| }); | |
| export function parseAction(action: { action: string }) { | |
| return ParseableSchema.parse(action); | |
| } |
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