resolveConfigExtends
resolveConfigExtends(
rawConfig,profileLabel):Promise<Record<string,unknown>>
Defined in: core/dist/config/loader.d.ts:102
GS2-41 — resolve a named profile’s extends inheritance into a single composed raw config,
riding the SAME GS2-1 deep-merge the config LAYERS use (NO second merge engine). When the given
profile config declares extends: "<base>", the base profile’s config resolves FIRST
(recursively — a base may itself extend another, so base-of-base resolves first), then this
profile’s own fields merge on top with last-wins semantics: the child overrides the base, nested
objects merge, arrays REPLACE except the additive-array fields (allowDirs, aiignore.patterns
and the three approvals rule lists, see isAdditiveArrayField) which accumulate
base+child. The extends key itself is consumed and never leaks into the composed output.
A config WITHOUT extends is returned UNCHANGED — every non-inheriting config (the vast
majority) is untouched and behaves exactly as before.
Composition is CONFINED to the profile-dir layer: it produces the single raw config that then
acts as the project-file layer the global config underlays and CLI flags overlay, preserving
GS2-33’s outer precedence CLI flags > profile (base+child composed) > global > defaults. It is
therefore invoked in initConfig on the loaded project/profile config BEFORE
applyGlobalConfigBase.
The base profile is discovered with resolveIdentityProfileConfigPath (the SAME strict
up-tree profile walk --profile uses), so extends names a profile exactly as a user selects
one; a name with no config dir is a hard, clearly-named error.
CYCLE GUARD: the chain of profile NAMES is tracked (seeded with the selected profile’s own name);
because extends is single-valued the chain is linear, so a repeated name — A extends B extends A, or a self-extend — is an unambiguous cycle and fails fast with a clear error NAMING the cycle,
never infinite-looping / stack-overflowing. A hard MAX_EXTENDS_CHAIN_DEPTH cap backstops
it regardless of how the base path was derived.
Parameters
Section titled “Parameters”rawConfig
Section titled “rawConfig”Record<string, unknown>
the just-loaded, schema-validated raw config that MAY declare extends.
profileLabel
Section titled “profileLabel”string | undefined
the selected profile’s own name (for cycle detection + messages); undefined for a plain (non-profile) project config.
Returns
Section titled “Returns”Promise<Record<string, unknown>>