EXT_CONFIG_INVALID

EXT_CONFIG_INVALID — extforge.config.ts has a value that does not match the schema.

When you see this

A field has the wrong type, an unknown enum value (e.g. browsers: [“brave”]), or a malformed nested option.

How to fix

Read the per-issue suggestions in the error output. The path (browsers.0, dev.port) tells you exactly which field. The Configuration reference enumerates allowed values.