In some cases, using tsconfig.json compilerOptions.paths results in TypeError [Error]: item.test is not a function

[panmenghan]

env:

windows 11
node v20.17.0

the reproduction repo:
https://github.com/panmenghan/ts-directly-bug

the steps to reproduce the bug:

$ pnpm i

$ node --import ts-directly/register src/index.ts

node:internal/modules/run_main:129
    triggerUncaughtException(
    ^
TypeError [Error]: item.test is not a function
    at file:///C:/Users/pmh/dev/tmp/ts-directly-bug/node_modules/.pnpm/ts-directly@2.1.1_esbuild@0.23.1_typescript@5.6.2/node_modules/ts-directly/lib/tsconfig.js:71:44
    at Array.find (<anonymous>)
    at getAlias (file:///C:/Users/pmh/dev/tmp/ts-directly-bug/node_modules/.pnpm/ts-directly@2.1.1_esbuild@0.23.1_typescript@5.6.2/node_modules/ts-directly/lib/tsconfig.js:71:26)
    at async resolve (file:///C:/Users/pmh/dev/tmp/ts-directly-bug/node_modules/.pnpm/ts-directly@2.1.1_esbuild@0.23.1_typescript@5.6.2/node_modules/ts-directly/lib/loader.js:76:19)
    at async nextResolve (node:internal/modules/esm/hooks:866:22)
    at async Hooks.resolve (node:internal/modules/esm/hooks:304:24)
    at async MessagePort.handleMessage (node:internal/modules/esm/worker:196:18)

I also tested with tsx using tsx src/index.ts, it works.