parcel-bundler/parcel · error · ThrowableDiagnostic

The plugin "${pluginName}" is not compatible with the curren

Error message

The plugin "${pluginName}" is not compatible with the current version of Parcel. Requires "${parcelVersionRange}" but the current version is "${PARCEL_VERSION}".

What it means

A plugin's `package.json` may declare an `engines.parcel` semver range declaring which Parcel versions it supports. After resolving the plugin, Parcel checks `semver.satisfies(PARCEL_VERSION, parcelVersionRange)`; if the running Parcel version falls outside the range, it throws with both the required range and the current version, plus a code frame on the plugin's package.json.

Source

Thrown at packages/core/core/src/loadParcelPlugin.js:205

          origin: '@parcel/core',
          message: `The plugin "${pluginName}" needs to specify a \`package.json#engines.parcel\` field with the supported Parcel version range.`,
        });
      }

      if (
        parcelVersionRange &&
        !semver.satisfies(PARCEL_VERSION, parcelVersionRange)
      ) {
        let pkgFile = nullthrows(
          await resolveConfig(
            options.inputFS,
            resolved,
            ['package.json'],
            options.projectRoot,
          ),
        );
        let pkgContents = await options.inputFS.readFile(pkgFile, 'utf8');
        throw new ThrowableDiagnostic({
          diagnostic: {
            message: md`The plugin "${pluginName}" is not compatible with the current version of Parcel. Requires "${parcelVersionRange}" but the current version is "${PARCEL_VERSION}".`,
            origin: '@parcel/core',
            codeFrames: [
              {
                filePath: pkgFile,
                language: 'json5',
                code: pkgContents,
                codeHighlights: generateJSONCodeHighlights(pkgContents, [
                  {
                    key: '/engines/parcel',
                  },
                ]),
              },
            ],
          },
        });
      }

View on GitHub (pinned to 59484858a1)

Solutions

1. Update the plugin to a version whose `engines.parcel` covers your Parcel version.
2. Pin Parcel to a version the plugin supports.
3. If you own the plugin, widen or update its `engines.parcel` range and republish.

Example fix

// before (plugin package.json)
{ "engines": { "parcel": "2.0.0 - 2.5.0" } }

// after
{ "engines": { "parcel": "^2.0.0" } }

// Check semver compatibility before loading the plugin.
import semver from 'semver';
const range = pluginPkg.engines?.parcel;
if (range && !semver.satisfies(PARCEL_VERSION, range)) {
  throw new Error(`upgrade/downgrade plugin to satisfy ${range}`);
}

function satisfiesParcel(pluginPkg: any, parcelVersion: string): boolean {
  const range = pluginPkg.engines?.parcel;
  return !range || semver.satisfies(parcelVersion, range);
}

When it happens

Trigger: A plugin whose `engines.parcel` range excludes the installed Parcel version (e.g. plugin requires `^2.0.0` but Parcel is `2.9.0` and the range is actually narrower, or a v1 plugin on Parcel v2).

Common situations: Upgrading Parcel without updating plugins; using a plugin pinned to an older major; mismatched versions across a monorepo.

Related errors

• Could not determine version of ${pluginName} in ${path.relat
• Bundle is not inline and unable to retrieve contents
• Asset has an AST but no generate method is available on the
• ${pluginName} does not have a generate method
• Local plugins are not supported in Parcel config packages. P

AI-assisted analysis of parcel-bundler/parcel@59484858a1 (2026-08-13). Data as JSON: /api/errors/99ebf11a5fdfc8fd. Report an issue: GitHub.