gistfile1.js

  instance.extend("parseImportSpecifiers", function (inner) {
    return function (node) {
      node.importKind = "value"
      if (this.isContextual("type") || this.type === tt._typeof) {
        if (this.type === tt._typeof) {
          node.importKind = "typeof"
          this.eat(tt._typeof)
        }

        var start = this.markPosition()
        var typeId = this.parseIdent()
        if ((this.type === tt.name && this.value !== "from") || this.type === tt.braceL || this.type === tt.star) {
          node.importKind = "type"
        } else {
          node.specifiers.push(this.parseImportSpecifierDefault(typeId, start))
          if (this.isContextual("from")) return
          this.eat(tt.comma)
        }
      }
      inner.call(this, node)
    }
  })