tests/cases/conformance/classes/indexMemberDeclarations/privateIndexer.ts(4,5): error TS1145: Modifiers not permitted on index signature members. tests/cases/conformance/classes/indexMemberDeclarations/privateIndexer.ts(8,5): error TS1145: Modifiers not permitted on index signature members. tests/cases/conformance/classes/indexMemberDeclarations/privateIndexer.ts(12,5): error TS1145: Modifiers not permitted on index signature members. ==== tests/cases/conformance/classes/indexMemberDeclarations/privateIndexer.ts (3 errors) ==== // private indexers not allowed class C { private [x: string]: string; ~~~~~~~ !!! error TS1145: Modifiers not permitted on index signature members. } class D { private [x: number]: string; ~~~~~~~ !!! error TS1145: Modifiers not permitted on index signature members. } class E { private [x: string]: T; ~~~~~~~ !!! error TS1145: Modifiers not permitted on index signature members. }