Package Exports

schema-utils

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (schema-utils) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Schema Utils

Install

npm i schema-utils

Usage

`validateOptions`

schema.json

{
  "type": "object",
  "properties": {
    // Options...
  },
  "additionalProperties": false
}

Error Messages (Custom)

schema.json

{
  "type": "object",
  "properties": {
    "option": {
      "type": [ "boolean" ]
    }
  },
  // Overrides the default err.message for option
  "errorMessage": {
    "option": "should be {Boolean} (https:/github.com/org/repo#anchor)"
  }
  "additionalProperties": false
}

import schema from 'path/to/schema.json'
import validateOptions from 'schema-utils'

validateOptions(schema, options, 'Loader/Plugin Name')

Examples

schema.json

{
  "type": "object",
  "properties": {
    "name": {
      "type": "string"
    },
    "test": {
      "anyOf": [
        { "type": "array" },
        { "type": "string" },
        { "instanceof": "RegExp" }
      ]
    },
    "transform": {
      "instanceof": "Function"
    },
    "sourceMap": {
      "type": "boolean"
    }
  },
  "additionalProperties": false
}

`Loader`

import { getOptions } from 'loader-utils'
import validateOptions from 'schema-utils'

import schema from 'path/to/schema.json'

function loader (src, map) {
  const options = getOptions(this) || {}

  validateOptions(schema, options, 'Loader Name')

  // Code...
}

`Plugin`

import validateOptions from 'schema-utils'

import schema from 'path/to/schema.json'

class Plugin {
  constructor (options) {
    validateOptions(schema, options, 'Plugin Name')

    this.options = options
  }

  apply (compiler) {
    // Code...
  }
}