Improve error message for mismatched vue, vue-template-compiler

[fastfedora]

When the version of the vue-template-compiler does not match the version of vue, the following error is thrown (code):

node_modules/fork-ts-checker-webpack-plugin/lib/VueProgram.js:183
            throw new Error('When you use `vue` option, make sure to install `vue-template-compiler`.');
            ^
Error: When you use `vue` option, make sure to install `vue-template-compiler`.

In this case vue-template-compiler is already installed; it's just that there is a version number mismatch. It would be helpful if the following text was added:

If vue-template-compiler is already installed as a dependency, ensure it has the same version number as the vue dependency.

Alternatively, printing the underlying error thrown from vue-template-compiler would help make the root cause of the error clearer.

[xinbenlv]

+10000000000

[xinbenlv]

@fastfedora you want to update your link to code to https://github.com/Realytics/fork-ts-checker-webpack-plugin/blob/4537c161e26a4961663236e208644ddd3d84a9ca/src/VueProgram.ts#L273 (permlink)

[johnnyreilly]

Sounds good. Would you like to submit a PR?

[fastfedora]

I no longer am on the project I was using Vue for, so have no easy way to test the code for a PR. But a decent fix would be to change lines 313-317 from:

    } catch (err) {
      throw new Error(
        'When you use `vue` option, make sure to install `vue-template-compiler`.'
      );
    }

To:

    } catch (err) {
      throw new Error(
        `Could not initialize 'vue-template-compiler'. When you use 'vue' option, make 
sure to install 'vue-template-compiler' and that the version matches that of 'vue'. 
Error details: ${err.message}`;
      );
    }

[piotr-oles]

@fastfedora , @xinbenlv
Please try fork-ts-checker-webpack-plugin@alpha - I've published a new version which should resolve this issue 🚀
I will close this issue to clean-up the backlog :)