Package isn't working with Typescript v5.6+

[mkszepp]

The ember-source v6.1+ ships now by default the flat config for eslint.

Unfortuanally i was running into this error:
0:0 error Parsing error: Cannot read properties of undefined (reading 'sourceFile')

Steps to reproduce:

1. ember new new-app --embroider --pnpm --typescript
2. change in .prettierrc.js to templateSingleQuote to true
3. copy components code to project

import Component from '@glimmer/component';
import { tracked } from '@glimmer/tracking';

export default class Test2 extends Component {
@tracked text = 'hello';

<template>
  {{! template-lint-disable no-bare-strings }}
  <div class='row'>
    <div class='col box'>
      <div class='row'>
        <div class='col'>
          <h2>
            {{this.hello}}
          </h2>
        </div>
      </div>
    </div>
  </div>
</template>
}

declare module '@glint/environment-ember-loose/registry' {
export default interface Registry {
  Test2: typeof Test2;
}
}

4. run pnpm run lint:js

Result:
The error is visible.

TypeError: Cannot read properties of undefined (reading 'sourceFile')
    at isDocumentRegistryEntry (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:142504:18)
    at getDocumentRegistryEntry (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:142580:19)
    at Object.releaseDocumentWithKey (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:142675:19)
    at Object.getOrCreateSourceFileByPath [as getSourceFileByPath] (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:151555:30)
    at tryReuseStructureFromOldProgram (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:126294:59)
    at createProgram (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:125689:23)
    at synchronizeHostDataWorker (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:151491:15)
    at synchronizeHostData (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:151386:7)
    at Object.getProgram (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:151568:5)
    at ConfiguredProject2.updateGraphWorker (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:186518:41)
    at ConfiguredProject2.updateGraph (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:186353:32)
    at ConfiguredProject2.updateGraph (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:187646:24)
    at updateWithTriggerFile (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:188190:11)
    at updateConfiguredProject (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:188198:9)
    at updateProjectFoundUsingFind (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:188133:28)
    at _ProjectService.findCreateOrReloadConfiguredProject (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:190784:62)
    at _ProjectService.tryFindDefaultConfiguredProjectForOpenScriptInfo (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:190819:25)
    at _ProjectService.tryFindDefaultConfiguredProjectAndLoadAncestorsForOpenScriptInfo (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:190977:25)
    at _ProjectService.assignProjectToOpenedScriptInfo (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:190730:27)
    at _ProjectService.openClientFileWithNormalizedPath (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:191088:48)
    at _ProjectService.openClientFile (/home/markuss/projects/test/new-app/node_modules/.pnpm/typescript@5.7.3/node_modules/typescript/lib/typescript.js:190638:17)
    at openClientFile (/home/markuss/projects/test/new-app/node_modules/.pnpm/@typescript-eslint+typescript-estree@8.19.1_typescript@5.7.3/node_modules/@typescript-eslint/typescript-estree/dist/useProgramFromProjectService.js:113:40)
    at openClientFileAndMaybeReload (/home/markuss/projects/test/new-app/node_modules/.pnpm/@typescript-eslint+typescript-estree@8.19.1_typescript@5.7.3/node_modules/@typescript-eslint/typescript-estree/dist/useProgramFromProjectService.js:118:22)
    at openClientFileFromProjectService (/home/markuss/projects/test/new-app/node_modules/.pnpm/@typescript-eslint+typescript-estree@8.19.1_typescript@5.7.3/node_modules/@typescript-eslint/typescript-estree/dist/useProgramFromProjectService.js:68:20)
    at useProgramFromProjectService (/home/markuss/projects/test/new-app/node_modules/.pnpm/@typescript-eslint+typescript-estree@8.19.1_typescript@5.7.3/node_modules/@typescript-eslint/typescript-estree/dist/useProgramFromProjectService.js:185:9)
    at getProgramAndAST (/home/markuss/projects/test/new-app/node_modules/.pnpm/@typescript-eslint+typescript-estree@8.19.1_typescript@5.7.3/node_modules/@typescript-eslint/typescript-estree/dist/parser.js:44:100)
    at parseAndGenerateServices (/home/markuss/projects/test/new-app/node_modules/.pnpm/@typescript-eslint+typescript-estree@8.19.1_typescript@5.7.3/node_modules/@typescript-eslint/typescript-estree/dist/parser.js:154:11)
    at Object.parseForESLint (/home/markuss/projects/test/new-app/node_modules/.pnpm/@typescript-eslint+parser@8.19.1_eslint@9.18.0_typescript@5.7.3/node_modules/@typescript-eslint/parser/dist/parser.js:101:80)
    at Object.parseForESLint (/home/markuss/projects/test/new-app/node_modules/.pnpm/ember-eslint-parser@0.5.7_@babel+core@7.26.0_@typescript-eslint+parser@8.19.1_eslint@9.18.0_t_vb2dmusjgka2eyua64avbrjc34/node_modules/ember-eslint-parser/src/parser/gjs-gts-parser.js:55:30)
    at Object.parse (/home/markuss/projects/test/new-app/node_modules/.pnpm/eslint@9.18.0/node_modules/eslint/lib/languages/js/index.js:270:26)
    at ParserService.parseSync (/home/markuss/projects/test/new-app/node_modules/.pnpm/eslint@9.18.0/node_modules/eslint/lib/services/parser-service.js:36:33)
    at #flatVerifyWithoutProcessors (/home/markuss/projects/test/new-app/node_modules/.pnpm/eslint@9.18.0/node_modules/eslint/lib/linter/linter.js:1669:47)
    at Linter._verifyWithFlatConfigArrayAndWithoutProcessors (/home/markuss/projects/test/new-app/node_modules/.pnpm/eslint@9.18.0/node_modules/eslint/lib/linter/linter.js:1993:49)
    at /home/markuss/projects/test/new-app/node_modules/.pnpm/eslint@9.18.0/node_modules/eslint/lib/linter/linter.js:1609:29
    at Array.map (<anonymous>)
    at Linter._verifyWithFlatConfigArrayAndProcessor (/home/markuss/projects/test/new-app/node_modules/.pnpm/eslint@9.18.0/node_modules/eslint/lib/linter/linter.js:1604:36)
    at Linter._verifyWithFlatConfigArray (/home/markuss/projects/test/new-app/node_modules/.pnpm/eslint@9.18.0/node_modules/eslint/lib/linter/linter.js:2069:25)
    at Linter.verify (/home/markuss/projects/test/new-app/node_modules/.pnpm/eslint@9.18.0/node_modules/eslint/lib/linter/linter.js:1543:61)
    at Linter.verifyAndFix (/home/markuss/projects/test/new-app/node_modules/.pnpm/eslint@9.18.0/node_modules/eslint/lib/linter/linter.js:2320:29)
    at verifyText (/home/markuss/projects/test/new-app/node_modules/.pnpm/eslint@9.18.0/node_modules/eslint/lib/eslint/eslint.js:327:48)
    at /home/markuss/projects/test/new-app/node_modules/.pnpm/eslint@9.18.0/node_modules/eslint/lib/eslint/eslint.js:807:40

Downgrade to typescript 5.5 solve the issue

Discord discussion: https://discord.com/channels/480462759797063690/1328277408910016633

[mkszepp]

fixed by ember-tooling/ember-eslint-parser#126