What is the best way to import a YAML file into a Vue project?

Question

What is the best way to import a YAML file into a Vue project?

As a newcomer to Vue and the world of web development, I recently embarked on building a small app. In order to store data with comments, I opted to use YAML instead of JSON.

I experimented with two different YAML parsers:

https://github.com/nodeca/js-yaml (attempted installation via NPM)
https://github.com/edus44/vue-cli-plugin-yaml (attempted installation via the Vue GUI using vue ui)

However, both parsers presented the same issue when I executed vue serve:

error  in ./assets/data.yaml

Module parse failed: Unexpected character '#' (1:0)
You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file. See https://webpack.js.org/concepts#loaders
> #im a comment
| foo: "hello"
| bar: "world"

Despite believing my YAML syntax to be correct, here is how my YAML file is structured:

#im a comment
foo: "hello"
bar: "world"

This is how I attempted to import it:

import data from "./assets/data.yaml"

Although I tried to follow the instructions provided at the URL mentioned in the error message (https://webpack.js.org/concepts#loaders), I quickly found myself lost because:

I do not have a webpack.config.js file in my project as it was set up automatically by vue-cli.
The format const path = require('path'); does not seem to work in a Vue project?

Both YAML parsers and the webpack documentation assume a level of knowledge that I do not possess, and my attempts to find clarity through additional research have only added to my confusion :(

Any guidance or insights would be greatly appreciated!

javascript vue.js webpack yaml

Answer 1

Answer №1

After tinkering with vue-cli-plugin-yaml for some time, I eventually threw in the towel and followed @DigitalDrifter's suggestion to delve into Adding a New Loader. Yet, the information on that page alone was not sufficient to grasp how to actually utilize the API, so I scoured vue.config.js files on Github until I could piece together one:

module.exports = {
  chainWebpack: config => {
    config.module
      .rule('yaml')
        .test(/\.ya?ml?$/)
        .use('json-loader')
          .loader('json-loader')
          .end()
        .use('yaml-loader')
          .loader('yaml-loader')
  }
}

As evident from the vue.config.js file, I had to install yaml-loader along with json-loader.

Nevertheless, even this approach failed. I experimented with various configurations of vue.config.js for quite some time before realizing that the file must reside in my src folder, rather than the root directory of my project e.g. project_folder/src/vue.config.js, NOT project_folder/vue.config.js.

However, this contradicts what the official documentation states:

vue.config.js is an optional config file that will be automatically loaded by @vue/cli-service if it's present in your project root (next to package.json).

Furthermore, running vue inspect --rule yaml returned undefined, leading me to believe that this is more of a workaround than a definitive solution. Hence, I am hesitant to accept this as the ultimate answer. Unsure if the issue lies with the documentation or if there are peculiarities within my environment. It appears to be a recurring problem across projects.

View the outcomes of vue inspect here.

Answer 2

After tinkering with vue-cli-plugin-yaml for some time, I eventually threw in the towel and followed @DigitalDrifter's suggestion to delve into Adding a New Loader. Yet, the information on that page alone was not sufficient to grasp how to actually utilize the API, so I scoured vue.config.js files on Github until I could piece together one:

module.exports = {
  chainWebpack: config => {
    config.module
      .rule('yaml')
        .test(/\.ya?ml?$/)
        .use('json-loader')
          .loader('json-loader')
          .end()
        .use('yaml-loader')
          .loader('yaml-loader')
  }
}

As evident from the vue.config.js file, I had to install yaml-loader along with json-loader.

Nevertheless, even this approach failed. I experimented with various configurations of vue.config.js for quite some time before realizing that the file must reside in my src folder, rather than the root directory of my project e.g. project_folder/src/vue.config.js, NOT project_folder/vue.config.js.

However, this contradicts what the official documentation states:

vue.config.js is an optional config file that will be automatically loaded by @vue/cli-service if it's present in your project root (next to package.json).

Furthermore, running vue inspect --rule yaml returned undefined, leading me to believe that this is more of a workaround than a definitive solution. Hence, I am hesitant to accept this as the ultimate answer. Unsure if the issue lies with the documentation or if there are peculiarities within my environment. It appears to be a recurring problem across projects.

View the outcomes of vue inspect here.

Answer 3

Answer №2

As stated on the json-loader documentation: Since webpack >= v2.0.0, importing JSON files will work without any additional configuration.

Therefore, simply installing and using yaml-loader should suffice (it worked for me). Additionally, you may need to make changes to your vue.config.js file like so:

module.exports = {
  chainWebpack: config => {
    config.module
      .rule('yaml')
        .test(/\.ya?ml?$/)
        .use('yaml-loader')
          .loader('yaml-loader')
  }
}

Answer 4

As stated on the json-loader documentation: Since webpack >= v2.0.0, importing JSON files will work without any additional configuration.

Therefore, simply installing and using yaml-loader should suffice (it worked for me). Additionally, you may need to make changes to your vue.config.js file like so:

module.exports = {
  chainWebpack: config => {
    config.module
      .rule('yaml')
        .test(/\.ya?ml?$/)
        .use('yaml-loader')
          .loader('yaml-loader')
  }
}

What is the best way to import a YAML file into a Vue project?

Answer №1

Answer №2

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