regexMap - Mapped Search & Replace (JavaScript)

regexMap-example.js

// EXAMPLE:

// Create a regaxMap array
var map = [
  [/FIND (.*)/g,function(self,str){
    // Get all arguments and variables
    var all = this.extractAll(arguments,self)
    // Get current line location/number
    var ln = all.lineNumber
    if(str != '' && str != undefined){
      return 'find(\''+str+'\');'
    } else {
      console.error('FIND requires a string in line: '+ln+'.')
      return ''
    }
  }],
];

console.log(new regexMap(map).replace("find something\nFIND This is, a string\nfind \n"))

regexMap.js

class regexMap {
  constructor(map) {
    this.map = map;
    this.data;
  }

  replace(str){
    this.data = str;
    for (var i = 0; i < this.map.length; i++){
      var regex = new RegExp(this.map[i][0], 'ig')
      this.data = this.data.replace(regex, this.map[i][1].bind(this))
    }
    return this.data
  }

  getLocation(args){
    return args[args.length-2]
  }

  getLastLine(lines){
    lines = this.getPreviousLines(lines)
    lines = this.getLocation(lines)
    return lines
  }

  getPreviousLines(self){
    var lines = this.data.substring(0, this.data.lastIndexOf(self)).split('\n')
    return lines
  }

  getPrevious(lines){
    lines = this.getPreviousLines(lines)
    lines.reverse(),lines.shift(),lines.shift(),lines.reverse()
    lines = lines.join('\n')
    return lines
  }

  getLineNumber(location){
    location = this.getLocation(location)
    var ln = this.data.substring(0,location)
    ln = ln.split('\n').length
    return ln
  }

  extractAll(args,self){
    var array = {
      data: this.data,
      location: this.getLocation(args),
      lastLine: this.getLastLine(self),
      previous: this.getPrevious(self),
      previousLines: this.getPreviousLines(self),
      lineNumber: this.getLineNumber(self)
    }
    return array
  }

  update(set){
    this.data = set
    return this.data
  }
}