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build fails in "npm i" - tsc errors: 'err' is of type 'unknown'. #245

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@DavidBiesack

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@DavidBiesack

I cloned this repo and tried to build locally (to try to debug/fix an issue I reported).

The npm i command failed in tsc

$ npm i

> [email protected] prepublish
> npm run build


> [email protected] build
> rimraf dist && tsc

src/commands/ajv.ts:89:11 - error TS18046: 'err' is of type 'unknown'.

89       if (err.code === "MODULE_NOT_FOUND") {
             ~~~

src/commands/ajv.ts:91:110 - error TS18046: 'err' is of type 'unknown'.

91           `'ts-node' is required for the TypeScript configuration files. Make sure it is installed\nError: ${err.message}`
                                                                                                                ~~~

src/commands/util.ts:55:25 - error TS18046: 'err' is of type 'unknown'.

55     const msg: string = err.message
                           ~~~

src/commands/util.ts:85:29 - error TS18046: 'err' is of type 'unknown'.

85     console.error(`error: ${err.message}`)
                               ~~~


Found 4 errors in 2 files.

Errors  Files
     2  src/commands/ajv.ts:89
     2  src/commands/util.ts:55
npm ERR! code 2
npm ERR! path ~/dev/tools/ajv-cli
npm ERR! command failed
npm ERR! command sh -c npm run build

Opening the project in VSCode, I also see (other) errors such as

Cannot find module 'json5'. Did you mean to set the 'moduleResolution' option to 'nodenext', or to add aliases to the 'paths' option? ts(2792)

What version of Node.js is required to build? I tried Node 18 and 20

Please add a CONTRIBUTING file or build instructions to the README since this project does not build "out of the box".

(i.e. should I increment the package.json version when submitting a PR, or do maintainers do that when making a release, etc.)

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