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typescript.getTypescriptConfig.test.ts
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typescript.getTypescriptConfig.test.ts
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import {getTypescriptConfig, makeDefaultTypescriptConfig} from '../src/typescript'
import * as path from 'path'
describe('getTypescriptConfig', () => {
it(`returns default typescript configuration if the one provided doesn't exist`, () => {
expect(
getTypescriptConfig('/ciaone/my-folder'),
).toEqual(
makeDefaultTypescriptConfig()
)
})
it(`returns default typescript configuration if the one provided doesn't exist when tsConfigFileLocation provided`, () => {
expect(
getTypescriptConfig(process.cwd(), './tests/assets/tsconfigs/tsconfig.nonexistent.json'),
).toEqual(
makeDefaultTypescriptConfig()
)
})
it(`returns custom typescript configuration if tsConfigFileLocation provided`, () => {
const tsconfigDir = path.join(process.cwd(), './tests/assets/tsconfigs/')
expect(
getTypescriptConfig(tsconfigDir, 'tsconfig.default.json'),
).toEqual({
allowJs: true,
configFilePath: undefined,
lib: ["lib.es2015.d.ts"],
moduleResolution: 2,
outDir: path.join(tsconfigDir, '.build'),
preserveConstEnums: true,
rootDir: tsconfigDir,
sourceMap: true,
strictNullChecks: true,
target: 1
})
})
it(`throws error if configuration from tsConfigFileLocation is invalid`, () => {
expect.assertions(1)
try {
getTypescriptConfig(process.cwd(), './tests/assets/tsconfigs/tsconfig.invalid.json')
} catch (e) {
expect(e.message).toBe('Invalid TSConfig file - is this file JSON format?')
}
})
})