error TS5081: Plugin 'typescript-plugin-transform' failed while executing a transformer provided by the 'preEmit' hook: Error: Not yet implemented.
    at transform (tests/cases/conformance/plugins/node_modules/typescript-plugin-transform/index.js:6:15)
    at src/compiler/plugin.ts:1:1
    ... skipping 13 frames ...
    at fulfilled (built/local/run.js:1:1)


!!! error TS5081: Plugin 'typescript-plugin-transform' failed while executing a transformer provided by the 'preEmit' hook: Error: Not yet implemented.
!!! error TS5081:     at transform (tests/cases/conformance/plugins/node_modules/typescript-plugin-transform/index.js:6:15)
!!! error TS5081:     at src/compiler/plugin.ts:1:1
!!! error TS5081:     ... skipping 13 frames ...
!!! error TS5081:     at fulfilled (built/local/run.js:1:1)
==== tests/cases/conformance/plugins/tsconfig.json (0 errors) ====
    {
        "compilerOptions": {},
        "plugins": [
            "transform"
        ]
    }
    
==== tests/cases/conformance/plugins/main.ts (0 errors) ====
    const a = undefined;
==== tests/cases/conformance/plugins/node_modules/typescript-plugin-transform/package.json (0 errors) ====
    {
        "name": "typescript-plugin-transform",
        "version": "1.0.0",
        "main": "index.js",
        "typescriptPlugin": {
            "activationEvents": ["preEmit"]
        }
    }
    
==== tests/cases/conformance/plugins/node_modules/typescript-plugin-transform/index.js (0 errors) ====
    exports.preEmit = function() {
        return {
            customTransformers: { after: [transform] }
        };
        function transform() {
            throw new Error("Not yet implemented.");
        }
    };
    