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  • [AST Eslint] No console with schema options && isPrimitive

    // eslint exercise 4 (no-console)
    // When you're finished with this exercise, run
    //   "npm start exercise.eslint.5"
    //   to move on to the next exercise
    
    const disallowedMethods = ['log', 'info', 'warn', 'error', 'dir']
    
    module.exports = {
      meta: {
        schema: [
          {
            type: 'object',
            properties: {
              allowedMethods: {
                type: 'array',
                items: {
                  enum: ['log', 'info', 'warn', 'error', 'dir'],
                },
                minItems: 1,
                uniqueItems: true,
              },
            },
          },
        ],
      },
      create(context) {
        const config = context.options[0] || {}
        const allowedMethods = config.allowedMethods || []
        return {
          Identifier(node) {
            if (
              !looksLike(node, {
                name: 'console',
                parent: {
                  type: 'MemberExpression',
                  parent: {type: 'CallExpression'},
                  property: {
                    name: val =>
                      !allowedMethods.includes(val) &&
                      disallowedMethods.includes(val),
                  },
                },
              })
            ) {
              return
            }
            context.report({
              node: node.parent.property,
              message: 'Using console is not allowed',
            })
          },
        }
      },
    }
    
    function looksLike(a, b) {
      return (
        a &&
        b &&
        Object.keys(b).every(bKey => {
          const bVal = b[bKey]
          const aVal = a[bKey]
          if (typeof bVal === 'function') {
            return bVal(aVal)
          }
          return isPrimitive(bVal) ? bVal === aVal : looksLike(aVal, bVal)
        })
      )
    }
    
    function isPrimitive(val) {
      return val == null || /^[sbn]/.test(typeof val)
    }
    // eslint exercise 4 (no-console)
    // When you're finished with this exercise, run
    //   "npm start exercise.eslint.5"
    //   to move on to the next exercise
    
    const {RuleTester} = require('eslint')
    const rule = require('./no-console')
    
    const ruleTester = new RuleTester()
    ruleTester.run('no-console', rule, {
      valid: [
        'info()',
        'console',
        'console.log',
        'console.baz()',
        {code: 'console.warn()', options: [{allowedMethods: ['warn']}]},
      ],
      invalid: [
        invalid('console.log()'),
        invalid('console.info()'),
        invalid('console.warn()'),
      ],
    })
    
    function invalid(code) {
      return {
        code,
        errors: [{message: 'Using console is not allowed'}],
      }
    }
    
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  • 原文地址:https://www.cnblogs.com/Answer1215/p/12231422.html
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