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Add option to gen sourcemaps for handler.mjs #824

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Add option to gen sourcemaps for handler.mjs #824

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67a1c25
option to generate sourcemap for handler.mjs
cozzbp Jul 27, 2025
f1a97ce
add changeset
cozzbp Jul 27, 2025
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5 changes: 5 additions & 0 deletions .changeset/slow-radios-smoke.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1,5 @@
---
"@opennextjs/cloudflare": minor
---

add option to generate sourcemap for handler.mjs
9 changes: 9 additions & 0 deletions packages/cloudflare/src/api/config.ts
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Expand Up @@ -90,6 +90,7 @@ export function defineCloudflareConfig(config: CloudflareOverrides = {}): OpenNe
edgeExternals: ["node:crypto"],
cloudflare: {
useWorkerdCondition: true,
sourcemap: false,
},
dangerous: {
enableCacheInterception,
Expand Down Expand Up @@ -154,6 +155,14 @@ interface OpenNextConfig extends AwsOpenNextConfig {
*/
useWorkerdCondition?: boolean;

/**
* Whether to genereate a sourcemap for the bundled server.
*
*
* @default false
*/
sourcemap?: boolean;

/**
* Disable throwing an error when the config validation fails.
* This is useful for overriding some of the default provided by cloudflare.
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1 change: 1 addition & 0 deletions packages/cloudflare/src/cli/build/bundle-server.ts
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Expand Up @@ -81,6 +81,7 @@ export async function bundleServer(buildOpts: BuildOptions): Promise<void> {
minifySyntax: !debug,
legalComments: "none",
metafile: true,
sourcemap: getOpenNextConfig(buildOpts).cloudflare?.sourcemap,
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May be we can always generate the source maps.

The Next build dominates the build time so the build time should not change a lot

Suggested change
sourcemap: getOpenNextConfig(buildOpts).cloudflare?.sourcemap,
sourcemap: true,

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I'm just interested in figuring out a way to have server side sourcemaps for readable stack traces on cloudflare. Trying to figure out how to make this happen.

// Next traces files using the default conditions from `nft` (`node`, `require`, `import` and `default`)
//
// Because we use the `node` platform for this build, the "module" condition is used when no conditions are defined.
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