perf(compiler): remove `createProgram` for `isolatedModules: true` to boost startup speed (#1941)
perf(compiler): remove `createProgram` for `isolatedModules: true` to boost startup speed (#1941)

Since `transpile` API is used for `isolatedModules: true`, `createProgram` does not do anything with it. Therefore we can remove it
kulshekhar/ts-jest,kulshekhar/ts-jest