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tests/cases/conformance/parser/ecmascript5/IndexSignatures/parserIndexSignature8.ts(1,13): error TS1023: An index signature parameter type must be either 'string' or 'number'.
tests/cases/conformance/parser/ecmascript5/IndexSignatures/parserIndexSignature8.ts(2,14): error TS1023: An index signature parameter type must be either 'string' or 'number'.
==== tests/cases/conformance/parser/ecmascript5/IndexSignatures/parserIndexSignature8.ts (2 errors) ====
var foo: { [index: any]; }; // expect an error here
~~~~~
!!! error TS1023: An index signature parameter type must be either 'string' or 'number'.
var foo2: { [index: RegExp]; }; // expect an error here
~~~~~
!!! error TS1023: An index signature parameter type must be either 'string' or 'number'.
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