AggregatedResult and GlobalConfig cannot be imported on older version of TS compiler

[sachinjoseph]

Previously, runCLI, AggregatedResult and GlobalConfig were exported in jest but I found that runCLI is now to be imported from @jest/core and AggregatedResult and GlobalConfig from @jest/test-result and @jest/types respectively. Because these packages use the export type syntax, it is impossible to consume these using older versions of the TypeScript compiler.

Similar issues

Jest recently published fixes for very similar issues - see #9703 and #9714.

Steps to reproduce the behavior:

import @jest/types or @jest/test-result using an older version of the TypeScript compiler. The problem is:

• import keyword does not understand export type.
• import type is not available in older versions of TypeScript compiler.

Expected behavior

@jest/types or @jest/test-result is import-able by a older versions of the TypeScript compiler.

Link to how these exports are currently used

See how runCLI, AggregatedResult, and GlobalConfig are used: https://github.com/microsoft/rushstack/blob/fe4019a62d4dadeba329bafa0eab46b6f7bc0e67/core-build/gulp-core-build/src/tasks/JestTask.ts#L171-L177

[SimenB]

This should be fixed in the latest version, no? Do you have a code snippet that gives TS errors importing from jest@>=25.4.0?

[sachinjoseph]

Sorry my bad, my lockfile was importing [email protected] for some reason. Thanks @SimenB.

[SimenB]

Aha! Good news, thank you 🙂

[github-actions]

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