Property 'cmds' does not exist on type 'Client<boolean>'

C:\Users\------\AppData\Roaming\npm\node_modules\ts-node\src\index.ts:859
    return new TSError(diagnosticText, diagnosticCodes, diagnostics);
           ^
TSError: ⨯ Unable to compile TypeScript:
src/client.ts:15:8 - error TS2339: Property 'cmds' does not exist on type 'Client<boolean>'.

15 client.cmds = new Collection();
          ~~~~

    at createTSError (C:\Users\------\AppData\Roaming\npm\node_modules\ts-node\src\index.ts:859:12)
    at reportTSError (C:\Users\------\AppData\Roaming\npm\node_modules\ts-node\src\index.ts:863:19)
    at getOutput (C:\Users\------\AppData\Roaming\npm\node_modules\ts-node\src\index.ts:1077:36)
    at Object.compile (C:\Users\------\AppData\Roaming\npm\node_modules\ts-node\src\index.ts:1433:41)
    at Module.m._compile (C:\Users\------\AppData\Roaming\npm\node_modules\ts-node\src\index.ts:1617:30)
    at Module._extensions..js (node:internal/modules/cjs/loader:1159:10)
    at Object.require.extensions.<computed> [as .ts] (C:\Users\------\AppData\Roaming\npm\node_modules\ts-node\src\index.ts:1621:12)
    at Module.load (node:internal/modules/cjs/loader:981:32)
    at Function.Module._load (node:internal/modules/cjs/loader:827:12)
    at ModuleWrap.<anonymous> (node:internal/modules/esm/translators:170:29) {
  diagnosticCodes: [ 2339 ]
}