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fix: Validate server-only environment variables exclusively on the server to prevent browser validation errors.
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This commit is contained in:
Marc Mintel
2026-02-06 14:19:29 +01:00
parent ebe67afd73
commit 8062d33f35
1 changed files with 4 additions and 1 deletions
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5
lib/env.ts
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@@ -58,8 +58,11 @@ export const envSchema = z
const target = data.NEXT_PUBLIC_TARGET || data.TARGET; const target = data.NEXT_PUBLIC_TARGET || data.TARGET;
const isDev = target === 'development' || !target; const isDev = target === 'development' || !target;
const isBuildTimeValidation = process.env.SKIP_RUNTIME_ENV_VALIDATION === 'true'; const isBuildTimeValidation = process.env.SKIP_RUNTIME_ENV_VALIDATION === 'true';
const isServer = typeof window === 'undefined';
if (!isDev && !isBuildTimeValidation && !data.MAIL_HOST) { // Only enforce server-only variables when running on the server.
// In the browser, non-NEXT_PUBLIC_ variables are undefined and should not trigger validation errors.
if (isServer && !isDev && !isBuildTimeValidation && !data.MAIL_HOST) {
ctx.addIssue({ ctx.addIssue({
code: z.ZodIssueCode.custom, code: z.ZodIssueCode.custom,
message: 'MAIL_HOST is required in non-development environments', message: 'MAIL_HOST is required in non-development environments',