Method eat

lib/web/CodeMirror/src/util/StringStream.js:25–31

(match)

      return this.string.charAt(this.pos++)
  }
  eat(match) {
    let ch = this.string.charAt(this.pos)
    let ok
    if (typeof match == "string") ok = ch == match
    else ok = ch && (match.test ? match.test(ch) : match(ch))
    if (ok) {++this.pos; return ch}
  }
  eatWhile(match) {
    let start = this.pos
    while (this.eat(match)){}