[AST Babel Plugin] Transform code, add line:column number for console log

For example we have current code:

function add(a, b) {
    console.log(a, b)
      return a + b
}

function subtract(a, b) {
    console.log(a, b)
      return a - b
}

add(1, 2)
subtract(2, 1)
console.log('sup dawg')

 

We want to transform the code to:

function add(a, b) {
    console.log("2:4", a, b)
      return a + b
}

function subtract(a, b) {
    console.log("7:4", a, b)
      return a - b
}

add(1, 2)
subtract(2, 1)
console.log("13:0", 'sup dawg')

Added line and colum number in front of console log arguements

 

Using the utilites functions:

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)
}

 

Babel plugin code:

export default function (babel) {
  const { types: t } = babel;
 
  return {
    name: "ast-transform", // not required
    visitor: {
      CallExpression(path) {
          if (!looksLike(path.node, {
            callee: {
              type: 'MemberExpression',
              object: {
                  name: 'console'
              },
              property: {
                  name: 'log'
              }
            }
        })) {
          return
        }
        console.log(path.node.loc)
        // insert string into console.log('instread here', a,b)
        const {line, column} = path.node.loc.start;
        path.node.arguments.unshift(t.stringLiteral(`${line}:${column}`))
      }
    }
  };
}