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Make lazy discovery in Next.js opt-in #1036

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Merged
VaguelySerious merged 1 commit into from
Feb 13, 2026
Merged

Make lazy discovery in Next.js opt-in #1036

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5 changes: 5 additions & 0 deletions .changeset/wide-onions-slide.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
"@workflow/next": patch
---

Make lazy discovery in Next.js opt-in
12 changes: 11 additions & 1 deletion packages/next/src/index.ts
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
import type { NextConfig } from 'next';
import semver from 'semver';
import {
DEFERRED_BUILDER_MIN_VERSION,
getNextBuilder,
shouldUseDeferredBuilder,
WORKFLOW_DEFERRED_ENTRIES,
Expand All @@ -17,6 +18,7 @@ export function withWorkflow(
workflows,
}: {
workflows?: {
lazyDiscovery?: boolean;
local?: {
port?: number;
dataDir?: string;
Expand Down Expand Up @@ -66,7 +68,15 @@ export function withWorkflow(
const existingRules = nextConfig.turbopack.rules as any;
const nextVersion = require('next/package.json').version;
const supportsTurboCondition = semver.gte(nextVersion, 'v16.0.0');
const useDeferredBuilder = shouldUseDeferredBuilder(nextVersion);
const useDeferredBuilder =
workflows?.lazyDiscovery && shouldUseDeferredBuilder(nextVersion);

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if (workflows?.lazyDiscovery && !useDeferredBuilder) {
console.warn(
`Enabled lazyDiscovery but Next.js version is not compatible, needs ${DEFERRED_BUILDER_MIN_VERSION} have ${nextVersion}`
);
}

// Deferred builder discovers files via loader socket notifications, so
// turbopack content conditions are only needed with the eager builder.
const shouldApplyTurboCondition =
Expand Down
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