TypeError when calling toObservable in convert-nx-executor.ts

Current Behavior

Running ng lint causes an error in the devkit package of nx.

Expected Behavior

No error to be thrown

The issue is at https://github.com/nrwl/nx/blob/master/packages/devkit/src/utils/convert-nx-executor.ts#L52

if ((!value as any).next) { should be if (!(value as any).next) { (note the placement of the exclamation mark).

Steps to Reproduce

I’m not sure this requires steps to reproduce. The code cannot work since any value, whether it had a next attribute or not, would fail to satisfy the condition and any value that should have passed the condition would cause the error on line 60

I think it would be ideal to have a unit test for this toObservable to avoid this type of issue.

Failure Logs

.../node_modules/@nrwl/devkit/src/utils/convert-nx-executor.js:55
                        .next()
                         ^

TypeError: iterator.next is not a function
    at recurse (/Users/dave/dev/kahi/web-client-app/node_modules/@nrwl/devkit/src/utils/convert-nx-executor.js:55:26)
    at /Users/dave/dev/kahi/web-client-app/node_modules/@nrwl/devkit/src/utils/convert-nx-executor.js:72:17

Environment

NX Report complete - copy this into the issue template

Node : 16.15.1 OS : darwin arm64 npm : 6.14.15

nx : 14.5.8 @nrwl/angular : Not Found @nrwl/cypress : Not Found @nrwl/detox : Not Found @nrwl/devkit : 14.5.8 @nrwl/eslint-plugin-nx : Not Found @nrwl/express : Not Found @nrwl/jest : Not Found @nrwl/js : Not Found @nrwl/linter : Not Found @nrwl/nest : Not Found @nrwl/next : Not Found @nrwl/node : Not Found @nrwl/nx-cloud : Not Found @nrwl/nx-plugin : Not Found @nrwl/react : Not Found @nrwl/react-native : Not Found @nrwl/schematics : Not Found @nrwl/storybook : Not Found @nrwl/web : Not Found @nrwl/workspace : Not Found typescript : 4.6.4

Local workspace plugins:

Community plugins: rxjs: 6.5.5 @cypress/schematic: 2.0.2

[Max-LAB]

Had the same issue, fixed it by updating those devDependencies to a version 14.0.3 in my package.json file

"devDependencies": {
    "@angular-eslint/builder": "14.0.3",
    "@angular-eslint/eslint-plugin": "14.0.3",
    "@angular-eslint/eslint-plugin-template": "14.0.3",
    "@angular-eslint/schematics": "14.0.3",
    "@angular-eslint/template-parser": "14.0.3",

Also, we can find info about @nrwl/devkit updates in angular-eslint changelog CHANGELOG.md

[AgentEnder]

The only affected package version with this should be 14.5.8, since 14.5.9 has been released nx migrate 14.5.9 is the recommended remediation for the bug.