require-docusaurus-faster-package-installed

Require @docusaurus/faster to be declared when stable or deprecated faster flags are configured.

Targeted pattern scope

This rule focuses on docusaurus.config.* files.

It reports configs that enable either:

future.faster
future.experimental_faster

without declaring:

@docusaurus/faster

in the nearest package manifest.

What this rule reports

This rule reports faster config that is enabled without the package dependency needed to support it.

Why this rule exists

Both the old experimental faster flags and the stable future.faster flags depend on the @docusaurus/faster package being installed.

Without that package declaration, the config can look valid in review while the workspace does not actually own the dependency it is enabling.

❌ Incorrect

export default {
    future: {
        faster: true,
    },
};

✅ Correct

export default {
    future: {
        faster: true,
    },
};

with @docusaurus/faster declared in the nearest package.json.

Behavior and migration notes

This rule is report-only.

It does not edit package.json automatically.

When not to use it

Do not use this rule if your repository intentionally relies on a higher-level workspace package manifest and you do not want each site workspace to declare @docusaurus/faster locally.

Rule catalog ID: R109

Targeted pattern scope​

What this rule reports​

Why this rule exists​

❌ Incorrect​

✅ Correct​

Behavior and migration notes​

When not to use it​

Further reading​