A name Object.prototype carries is a name like any other: own-key lookups for classes, fields, parts and property bags

dist/datamodel/kindMap.d.ts

@@ -1,6 +1,17 @@
 export declare const KIND_BY_CLASS: Record<string, string>;
 export declare const DERIVED_KIND_BY_CLASS: Record<string, string>;
 export declare const KIND_BY_CLASSIFICATION: Record<string, string>;
+/**
+ * The row `key` names in one of the tables above, or undefined when it names none.
+ *
+ * By OWN key only. The keys are words a file supplies — a class name, a catalog
+ * classification — and `toString`, `valueOf`, `constructor` and the rest of
+ * Object.prototype's members are valid MATLAB class names: on these object literals
+ * `KIND_BY_CLASS['toString']` is the inherited function, so the Kind of such a class
+ * came back a function (and of `constructor`, the Object function) rather than the raw
+ * class name every other unlisted class falls back to.
+ */
+export declare function kindIn(table: Record<string, string>, key: string): string | undefined;
 export declare function matlabVariableKind(isDerived: boolean): string;
 export declare function kindForClass(className: string, opts?: {
     isDerived?: boolean;