codesnips

fail-fast

typescript 
import { z } from "zod";

const booleanFromString = z.preprocess((val) => {
  if (typeof val !== "string") return val;
  return ["true", "1", "yes", "on"].includes(val.toLowerCase());
}, z.boolean());

Typed env parsing with zod

typescript zod validation
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javascript 
const { z } = require('zod');

const envSchema = z
  .object({
    NODE_ENV: z
      .enum(['development', 'test', 'production'])

Validate Environment Variables at Startup with a Zod Schema in Node.js

nodejs zod configuration
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typescript 
import { z } from "zod";

const booleanFromString = z
  .string()
  .transform((v) => v.trim().toLowerCase())
  .pipe(z.enum(["true", "false", "1", "0"]))

Type-Safe Environment Variable Parsing and Validation With Zod

config zod environment
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go 
package config

import (
	"fmt"
	"os"
	"strconv"

Load Go Configuration From Environment Variables With Typed Defaults

go configuration environment-variables
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