the tsc versions test is for ensuring the library can be used in projects with supported typescript versions
the test cases are specified in test/unit/tsc-versions-test.ts
during the test, temporary directories are created for the corresponding typescript version x.x.x:
test/tsc-versions/ts-x.x.x/
package.json
tsconfig.json
<modified copy of typings-test.ts>
the file typings-test.ts is copied from test/unit/typings-test.ts and only
its import statement for zmq is changed from
// from:
import * as zmq from "../../src"
// modified to:
import * as zmq from "../../../"relevant fields in package.json and tsconfig.json are set according to the
test case definition when they are copied to the temporary directory