Feature: Use TypeScript, Write 'jest.config.ts' file

[septs]

This allows us to TypeScript ONLY.

Expected:

// File path: project/jest.config.ts
import { Configuration } from "ts-jest";

const configure: Configuration = {
    preset: 'ts-jest',
    testEnvironment: 'jest-environment-jsdom-fourteen',
    globals: {
        'ts-jest': {
            isolatedModules: true,
        },
    },
}

export default configure

[ahnpnl]

hi, this feature doesn't belong to ts-jest scope, it should be in jest repo. You should ask in jest repo for this feature

[septs]

@ahnpnl jestjs/jest#9636 is done.