Variable TS_CONFIG_CANDIDATES`Const`

TS_CONFIG_CANDIDATES: readonly [
    "tsconfig.json",
    "tsconfig.app.json",
    "tsconfig.base.json",
    "tsconfig.build.json",
    "tsconfig.lib.json",
    "tsconfig.workspace.json",
] = ...

Candidate tsconfig filenames searched in order. Covers standard Angular CLI layouts, library projects, and monorepo roots.