es2015 unidiff

unidiff.js

"use strict";

function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

!function (e, n) {
  "object" == (typeof exports === "undefined" ? "undefined" : _typeof(exports)) && "undefined" != typeof module ? n(exports) : "function" == typeof define && define.amd ? define(["exports"], n) : n(e.unidiff = {});
}(void 0, function (e) {
  "use strict";

  function n(e) {
    return e && e.__esModule && Object.prototype.hasOwnProperty.call(e, "default") ? e.default : e;
  }

  function t(e, n) {
    return e(n = {
      exports: {}
    }, n.exports), n.exports;
  }

  var r = t(function (e, n) {
    function t() {}

    function r(e, n, t, r, i) {
      for (var o = 0, f = n.length, s = 0, a = 0; o < f; o++) {
        var u = n[o];

        if (u.removed) {
          if (u.value = r.slice(a, a + u.count).join(""), a += u.count, o && n[o - 1].added) {
            var c = n[o - 1];
            n[o - 1] = n[o], n[o] = c;
          }
        } else {
          if (!u.added && i) {
            var l = t.slice(s, s + u.count);
            l = l.map(function (e, n) {
              var t = r[a + n];
              return t.length > e.length ? t : e;
            }), u.value = l.join("");
          } else u.value = t.slice(s, s + u.count).join("");

          s += u.count, u.added || (a += u.count);
        }
      }

      var d = n[f - 1];
      return f > 1 && (d.added || d.removed) && e.equals("", d.value) && (n[f - 2].value += d.value, n.pop()), n;
    }

    n.__esModule = !0, n.default = t, t.prototype = {
      diff: function diff(e, n) {
        var t = arguments.length <= 2 || void 0 === arguments[2] ? {} : arguments[2],
            i = t.callback;
        "function" == typeof t && (i = t, t = {}), this.options = t;
        var o = this;

        function f(e) {
          return i ? (setTimeout(function () {
            i(void 0, e);
          }, 0), !0) : e;
        }

        e = this.castInput(e), n = this.castInput(n), e = this.removeEmpty(this.tokenize(e));
        var s = (n = this.removeEmpty(this.tokenize(n))).length,
            a = e.length,
            u = 1,
            c = s + a,
            l = [{
          newPos: -1,
          components: []
        }],
            d = this.extractCommon(l[0], n, e, 0);
        if (l[0].newPos + 1 >= s && d + 1 >= a) return f([{
          value: n.join(""),
          count: n.length
        }]);

        function h() {
          for (var t = -1 * u; t <= u; t += 2) {
            var i = void 0,
                c = l[t - 1],
                d = l[t + 1],
                h = (d ? d.newPos : 0) - t;
            c && (l[t - 1] = void 0);
            var p = c && c.newPos + 1 < s,
                v = d && 0 <= h && h < a;

            if (p || v) {
              if (!p || v && c.newPos < d.newPos ? (i = {
                newPos: (g = d).newPos,
                components: g.components.slice(0)
              }, o.pushComponent(i.components, void 0, !0)) : ((i = c).newPos++, o.pushComponent(i.components, !0, void 0)), h = o.extractCommon(i, n, e, t), i.newPos + 1 >= s && h + 1 >= a) return f(r(o, i.components, n, e, o.useLongestToken));
              l[t] = i;
            } else l[t] = void 0;
          }

          var g;
          u++;
        }

        if (i) !function e() {
          setTimeout(function () {
            if (u > c) return i();
            h() || e();
          }, 0);
        }();else for (; u <= c;) {
          var p = h();
          if (p) return p;
        }
      },
      pushComponent: function pushComponent(e, n, t) {
        var r = e[e.length - 1];
        r && r.added === n && r.removed === t ? e[e.length - 1] = {
          count: r.count + 1,
          added: n,
          removed: t
        } : e.push({
          count: 1,
          added: n,
          removed: t
        });
      },
      extractCommon: function extractCommon(e, n, t, r) {
        for (var i = n.length, o = t.length, f = e.newPos, s = f - r, a = 0; f + 1 < i && s + 1 < o && this.equals(n[f + 1], t[s + 1]);) {
          f++, s++, a++;
        }

        return a && e.components.push({
          count: a
        }), e.newPos = f, s;
      },
      equals: function equals(e, n) {
        return e === n;
      },
      removeEmpty: function removeEmpty(e) {
        for (var n = [], t = 0; t < e.length; t++) {
          e[t] && n.push(e[t]);
        }

        return n;
      },
      castInput: function castInput(e) {
        return e;
      },
      tokenize: function tokenize(e) {
        return e.split("");
      }
    };
  });
  n(r);
  var i = t(function (e, n) {
    n.__esModule = !0, n.characterDiff = void 0, n.diffChars = function (e, n, t) {
      return o.diff(e, n, t);
    };
    var t,
        i = (t = r) && t.__esModule ? t : {
      default: t
    };
    var o = n.characterDiff = new i.default();
  });
  n(i);
  i.characterDiff, i.diffChars;
  var o = t(function (e, n) {
    n.__esModule = !0, n.generateOptions = function (e, n) {
      if ("function" == typeof e) n.callback = e;else if (e) for (var t in e) {
        e.hasOwnProperty(t) && (n[t] = e[t]);
      }
      return n;
    };
  });
  n(o);
  o.generateOptions;
  var f = t(function (e, n) {
    n.__esModule = !0, n.wordDiff = void 0, n.diffWords = function (e, n, t) {
      var r = (0, o.generateOptions)(t, {
        ignoreWhitespace: !0
      });
      return a.diff(e, n, r);
    }, n.diffWordsWithSpace = function (e, n, t) {
      return a.diff(e, n, t);
    };
    var t,
        i = (t = r) && t.__esModule ? t : {
      default: t
    };
    var f = /^[A-Za-z\xC0-\u02C6\u02C8-\u02D7\u02DE-\u02FF\u1E00-\u1EFF]+$/,
        s = /\S/,
        a = n.wordDiff = new i.default();
    a.equals = function (e, n) {
      return e === n || this.options.ignoreWhitespace && !s.test(e) && !s.test(n);
    }, a.tokenize = function (e) {
      for (var n = e.split(/(\s+|\b)/), t = 0; t < n.length - 1; t++) {
        !n[t + 1] && n[t + 2] && f.test(n[t]) && f.test(n[t + 2]) && (n[t] += n[t + 2], n.splice(t + 1, 2), t--);
      }

      return n;
    };
  });
  n(f);
  f.wordDiff, f.diffWords, f.diffWordsWithSpace;
  var s = t(function (e, n) {
    n.__esModule = !0, n.lineDiff = void 0, n.diffLines = function (e, n, t) {
      return f.diff(e, n, t);
    }, n.diffTrimmedLines = function (e, n, t) {
      var r = (0, o.generateOptions)(t, {
        ignoreWhitespace: !0
      });
      return f.diff(e, n, r);
    };
    var t,
        i = (t = r) && t.__esModule ? t : {
      default: t
    };
    var f = n.lineDiff = new i.default();

    f.tokenize = function (e) {
      var n = [],
          t = e.split(/(\n|\r\n)/);
      t[t.length - 1] || t.pop();

      for (var r = 0; r < t.length; r++) {
        var i = t[r];
        r % 2 && !this.options.newlineIsToken ? n[n.length - 1] += i : (this.options.ignoreWhitespace && (i = i.trim()), n.push(i));
      }

      return n;
    };
  });
  n(s);
  s.lineDiff, s.diffLines, s.diffTrimmedLines;
  var a = t(function (e, n) {
    n.__esModule = !0, n.sentenceDiff = void 0, n.diffSentences = function (e, n, t) {
      return o.diff(e, n, t);
    };
    var t,
        i = (t = r) && t.__esModule ? t : {
      default: t
    };
    var o = n.sentenceDiff = new i.default();

    o.tokenize = function (e) {
      return e.split(/(\S.+?[.!?])(?=\s+|$)/);
    };
  });
  n(a);
  a.sentenceDiff, a.diffSentences;
  var u = t(function (e, n) {
    n.__esModule = !0, n.cssDiff = void 0, n.diffCss = function (e, n, t) {
      return o.diff(e, n, t);
    };
    var t,
        i = (t = r) && t.__esModule ? t : {
      default: t
    };
    var o = n.cssDiff = new i.default();

    o.tokenize = function (e) {
      return e.split(/([{}:;,]|\s+)/);
    };
  });
  n(u);
  u.cssDiff, u.diffCss;
  var c = t(function (e, n) {
    n.__esModule = !0, n.jsonDiff = void 0;
    var t = "function" == typeof Symbol && "symbol" == _typeof(Symbol.iterator) ? function (e) {
      return _typeof(e);
    } : function (e) {
      return e && "function" == typeof Symbol && e.constructor === Symbol ? "symbol" : _typeof(e);
    };
    n.diffJson = function (e, n, t) {
      return a.diff(e, n, t);
    }, n.canonicalize = u;
    var i,
        o = (i = r) && i.__esModule ? i : {
      default: i
    };
    var f = Object.prototype.toString,
        a = n.jsonDiff = new o.default();

    function u(e, n, r) {
      n = n || [], r = r || [];
      var i = void 0;

      for (i = 0; i < n.length; i += 1) {
        if (n[i] === e) return r[i];
      }

      var o = void 0;

      if ("[object Array]" === f.call(e)) {
        for (n.push(e), o = new Array(e.length), r.push(o), i = 0; i < e.length; i += 1) {
          o[i] = u(e[i], n, r);
        }

        return n.pop(), r.pop(), o;
      }

      if (e && e.toJSON && (e = e.toJSON()), "object" === (void 0 === e ? "undefined" : t(e)) && null !== e) {
        n.push(e), o = {}, r.push(o);
        var s = [],
            a = void 0;

        for (a in e) {
          e.hasOwnProperty(a) && s.push(a);
        }

        for (s.sort(), i = 0; i < s.length; i += 1) {
          o[a = s[i]] = u(e[a], n, r);
        }

        n.pop(), r.pop();
      } else o = e;

      return o;
    }

    a.useLongestToken = !0, a.tokenize = s.lineDiff.tokenize, a.castInput = function (e) {
      return "string" == typeof e ? e : JSON.stringify(u(e), void 0, "  ");
    }, a.equals = function (e, n) {
      return o.default.prototype.equals(e.replace(/,([\r\n])/g, "$1"), n.replace(/,([\r\n])/g, "$1"));
    };
  });
  n(c);
  c.jsonDiff, c.diffJson, c.canonicalize;
  var l = t(function (e, n) {
    n.__esModule = !0, n.parsePatch = function (e) {
      var n = arguments.length <= 1 || void 0 === arguments[1] ? {} : arguments[1],
          t = e.split("\n"),
          r = [],
          i = 0;

      function o() {
        var e = {};

        for (r.push(e); i < t.length;) {
          var o = t[i];
          if (/^(\-\-\-|\+\+\+|@@)\s/.test(o)) break;
          var a = /^(?:Index:|diff(?: -r \w+)+)\s+(.+?)\s*$/.exec(o);
          a && (e.index = a[1]), i++;
        }

        for (f(e), f(e), e.hunks = []; i < t.length;) {
          var u = t[i];
          if (/^(Index:|diff|\-\-\-|\+\+\+)\s/.test(u)) break;
          if (/^@@/.test(u)) e.hunks.push(s());else {
            if (u && n.strict) throw new Error("Unknown line " + (i + 1) + " " + JSON.stringify(u));
            i++;
          }
        }
      }

      function f(e) {
        var n = /^(\-\-\-|\+\+\+)\s+(\S*)\s?(.*?)\s*$/.exec(t[i]);

        if (n) {
          var r = "---" === n[1] ? "old" : "new";
          e[r + "FileName"] = n[2], e[r + "Header"] = n[3], i++;
        }
      }

      function s() {
        for (var e = i, r = t[i++], o = r.split(/@@ -(\d+)(?:,(\d+))? \+(\d+)(?:,(\d+))? @@/), f = {
          oldStart: +o[1],
          oldLines: +o[2] || 1,
          newStart: +o[3],
          newLines: +o[4] || 1,
          lines: []
        }, s = 0, a = 0; i < t.length; i++) {
          var u = t[i][0];
          if ("+" !== u && "-" !== u && " " !== u && "\\" !== u) break;
          f.lines.push(t[i]), "+" === u ? s++ : "-" === u ? a++ : " " === u && (s++, a++);
        }

        if (s || 1 !== f.newLines || (f.newLines = 0), a || 1 !== f.oldLines || (f.oldLines = 0), n.strict) {
          if (s !== f.newLines) throw new Error("Added line count did not match for hunk at line " + (e + 1));
          if (a !== f.oldLines) throw new Error("Removed line count did not match for hunk at line " + (e + 1));
        }

        return f;
      }

      for (; i < t.length;) {
        o();
      }

      return r;
    };
  });
  n(l);
  l.parsePatch;
  var d = t(function (e, n) {
    n.__esModule = !0, n.default = function (e, n, t) {
      var r = !0,
          i = !1,
          o = !1,
          f = 1;
      return function s() {
        if (r && !o) {
          if (i ? f++ : r = !1, e + f <= t) return f;
          o = !0;
        }

        if (!i) return o || (r = !0), n <= e - f ? -f++ : (i = !0, s());
      };
    };
  });
  n(d);
  var h = t(function (e, n) {
    n.__esModule = !0, n.applyPatch = i, n.applyPatches = function (e, n) {
      "string" == typeof e && (e = (0, l.parsePatch)(e));
      var t = 0;
      !function r() {
        var o = e[t++];
        if (!o) return n.complete();
        n.loadFile(o, function (e, t) {
          if (e) return n.complete(e);
          var f = i(t, o, n);
          n.patched(o, f), setTimeout(r, 0);
        });
      }();
    };
    var t,
        r = (t = d) && t.__esModule ? t : {
      default: t
    };

    function i(e, n) {
      var t = arguments.length <= 2 || void 0 === arguments[2] ? {} : arguments[2];

      if ("string" == typeof n && (n = (0, l.parsePatch)(n)), Array.isArray(n)) {
        if (n.length > 1) throw new Error("applyPatch only works with a single input.");
        n = n[0];
      }

      var i = e.split("\n"),
          o = n.hunks,
          f = t.compareLine || function (e, n, t, r) {
        return n === r;
      },
          s = 0,
          a = t.fuzzFactor || 0,
          u = 0,
          c = 0,
          d = void 0,
          h = void 0;

      function p(e, n) {
        for (var t = 0; t < e.lines.length; t++) {
          var r = e.lines[t],
              o = r[0],
              u = r.substr(1);

          if (" " === o || "-" === o) {
            if (!f(n + 1, i[n], o, u) && ++s > a) return !1;
            n++;
          }
        }

        return !0;
      }

      for (var v = 0; v < o.length; v++) {
        for (var g = o[v], y = i.length - g.oldLines, m = 0, w = c + g.oldStart - 1, _ = (0, r.default)(w, u, y); void 0 !== m; m = _()) {
          if (p(g, w + m)) {
            g.offset = c += m;
            break;
          }
        }

        if (void 0 === m) return !1;
        u = g.offset + g.oldStart + g.oldLines;
      }

      for (var P = 0; P < o.length; P++) {
        var b = o[P],
            x = b.offset + b.newStart - 1;
        0 == b.newLines && x++;

        for (var L = 0; L < b.lines.length; L++) {
          var M = b.lines[L],
              D = M[0],
              k = M.substr(1);
          if (" " === D) x++;else if ("-" === D) i.splice(x, 1);else if ("+" === D) i.splice(x, 0, k), x++;else if ("\\" === D) {
            var S = b.lines[L - 1] ? b.lines[L - 1][0] : null;
            "+" === S ? d = !0 : "-" === S && (h = !0);
          }
        }
      }

      if (d) for (; !i[i.length - 1];) {
        i.pop();
      } else h && i.push("");
      return i.join("\n");
    }
  });
  n(h);
  h.applyPatch, h.applyPatches;
  var p = t(function (e, n) {
    function t(e) {
      if (Array.isArray(e)) {
        for (var n = 0, t = Array(e.length); n < e.length; n++) {
          t[n] = e[n];
        }

        return t;
      }

      return Array.from(e);
    }

    function r(e, n, r, i, o, f, a) {
      a || (a = {
        context: 4
      });
      var u = (0, s.diffLines)(r, i);

      function c(e) {
        return e.map(function (e) {
          return " " + e;
        });
      }

      u.push({
        value: "",
        lines: []
      });

      for (var l = [], d = 0, h = 0, p = [], v = 1, g = 1, y = function y(e) {
        var n = u[e],
            o = n.lines || n.value.replace(/\n$/, "").split("\n");

        if (n.lines = o, n.added || n.removed) {
          var f;

          if (!d) {
            var s = u[e - 1];
            d = v, h = g, s && (p = a.context > 0 ? c(s.lines.slice(-a.context)) : [], d -= p.length, h -= p.length);
          }

          (f = p).push.apply(f, t(o.map(function (e) {
            return (n.added ? "+" : "-") + e;
          }))), n.added ? g += o.length : v += o.length;
        } else {
          if (d) if (o.length <= 2 * a.context && e < u.length - 2) {
            var y;
            (y = p).push.apply(y, t(c(o)));
          } else {
            var m,
                w = Math.min(o.length, a.context);
            (m = p).push.apply(m, t(c(o.slice(0, w))));
            var _ = {
              oldStart: d,
              oldLines: v - d + w,
              newStart: h,
              newLines: g - h + w,
              lines: p
            };

            if (e >= u.length - 2 && o.length <= a.context) {
              var P = /\n$/.test(r),
                  b = /\n$/.test(i);
              0 != o.length || P ? P && b || p.push("\\ No newline at end of file") : p.splice(_.oldLines, 0, "\\ No newline at end of file");
            }

            l.push(_), d = 0, h = 0, p = [];
          }
          v += o.length, g += o.length;
        }
      }, m = 0; m < u.length; m++) {
        y(m);
      }

      return {
        oldFileName: e,
        newFileName: n,
        oldHeader: o,
        newHeader: f,
        hunks: l
      };
    }

    function i(e, n, t, i, o, f, s) {
      var a = r(e, n, t, i, o, f, s),
          u = [];
      e == n && u.push("Index: " + e), u.push("==================================================================="), u.push("--- " + a.oldFileName + (void 0 === a.oldHeader ? "" : "\t" + a.oldHeader)), u.push("+++ " + a.newFileName + (void 0 === a.newHeader ? "" : "\t" + a.newHeader));

      for (var c = 0; c < a.hunks.length; c++) {
        var l = a.hunks[c];
        u.push("@@ -" + l.oldStart + "," + l.oldLines + " +" + l.newStart + "," + l.newLines + " @@"), u.push.apply(u, l.lines);
      }

      return u.join("\n") + "\n";
    }

    n.__esModule = !0, n.structuredPatch = r, n.createTwoFilesPatch = i, n.createPatch = function (e, n, t, r, o, f) {
      return i(e, e, n, t, r, o, f);
    };
  });
  n(p);
  p.structuredPatch, p.createTwoFilesPatch, p.createPatch;
  var v = t(function (e, n) {
    n.__esModule = !0, n.convertChangesToDMP = function (e) {
      for (var n = [], t = void 0, r = void 0, i = 0; i < e.length; i++) {
        t = e[i], r = t.added ? 1 : t.removed ? -1 : 0, n.push([r, t.value]);
      }

      return n;
    };
  });
  n(v);
  v.convertChangesToDMP;
  var g = t(function (e, n) {
    function t(e) {
      var n = e;
      return n = (n = (n = (n = n.replace(/&/g, "&amp;")).replace(/</g, "&lt;")).replace(/>/g, "&gt;")).replace(/"/g, "&quot;");
    }

    n.__esModule = !0, n.convertChangesToXML = function (e) {
      for (var n = [], r = 0; r < e.length; r++) {
        var i = e[r];
        i.added ? n.push("<ins>") : i.removed && n.push("<del>"), n.push(t(i.value)), i.added ? n.push("</ins>") : i.removed && n.push("</del>");
      }

      return n.join("");
    };
  });
  n(g);
  g.convertChangesToXML;
  var y = t(function (e, n) {
    n.__esModule = !0, n.canonicalize = n.convertChangesToXML = n.convertChangesToDMP = n.parsePatch = n.applyPatches = n.applyPatch = n.createPatch = n.createTwoFilesPatch = n.structuredPatch = n.diffJson = n.diffCss = n.diffSentences = n.diffTrimmedLines = n.diffLines = n.diffWordsWithSpace = n.diffWords = n.diffChars = n.Diff = void 0;
    var t,
        o = (t = r) && t.__esModule ? t : {
      default: t
    };
    n.Diff = o.default, n.diffChars = i.diffChars, n.diffWords = f.diffWords, n.diffWordsWithSpace = f.diffWordsWithSpace, n.diffLines = s.diffLines, n.diffTrimmedLines = s.diffTrimmedLines, n.diffSentences = a.diffSentences, n.diffCss = u.diffCss, n.diffJson = c.diffJson, n.structuredPatch = p.structuredPatch, n.createTwoFilesPatch = p.createTwoFilesPatch, n.createPatch = p.createPatch, n.applyPatch = h.applyPatch, n.applyPatches = h.applyPatches, n.parsePatch = l.parsePatch, n.convertChangesToDMP = v.convertChangesToDMP, n.convertChangesToXML = g.convertChangesToXML, n.canonicalize = c.canonicalize;
  });
  n(y);
  y.canonicalize, y.convertChangesToXML, y.convertChangesToDMP, y.parsePatch, y.applyPatches, y.applyPatch, y.createPatch, y.createTwoFilesPatch, y.structuredPatch, y.diffJson, y.diffCss, y.diffSentences, y.diffTrimmedLines, y.diffLines, y.diffWordsWithSpace, y.diffWords, y.diffChars, y.Diff;

  function m(e, n) {
    var t = 0;

    for (var _r = 0; _r < e.length; _r++) {
      switch (e[_r].type) {
        case P:
          t += n[0];
          break;

        case _:
          t += n[1];
          break;

        case b:
          t++;
          break;

        default:
          throw Error("unknown change type: " + e[_r].type);
      }
    }

    return t;
  }

  function w(e, n, t) {
    this.changes = t, this.aoff = e, this.boff = n, this._alen = -1, this._blen = -1;
  }

  Object.defineProperty(w.prototype, "alen", {
    get: function get() {
      return -1 === this._alen ? this._alen = m(this.changes, [1, 0]) : this._alen;
    }
  }), Object.defineProperty(w.prototype, "blen", {
    get: function get() {
      return -1 === this._blen ? this._blen = m(this.changes, [0, 1]) : this._blen;
    }
  }), w.prototype.unified = function () {
    var e = [this.unifiedHeader()];
    return this.changes.forEach(function (n) {
      e.push(n.unified());
    }), e.join("\n");
  }, w.prototype.unifiedHeader = function () {
    var e = 1 === this.alen ? "" : "," + this.alen,
        n = 1 === this.blen ? "" : "," + this.blen,
        t = 0 === this.alen ? 0 : 1,
        r = 0 === this.blen ? 0 : 1;
    return "@@ -" + (this.aoff + t) + e + " +" + (this.boff + r) + n + " @@";
  }, w.prototype.shorthand = function () {
    return this.changes.reduce(function (e, n) {
      return e + n.type;
    }, "");
  }, w.prototype.toString = function () {
    return "{" + this.shorthand() + "} " + this.unifiedHeader();
  };
  var _ = "+",
      P = "-",
      b = "s";

  function x(e) {
    return "s" === e ? " " : e;
  }

  function L(e, n) {
    this.type = e, this.text = n;
  }

  function M(e, n) {
    if (0 === n) return [];
    var t = [],
        r = e.value;
    if (void 0 === n) (t = r.split("\n"))[t.length - 1] || t.pop();else if (n > 0) {
      var _e = k(r, "\n", 0, n, !1);

      t = r.substring(0, _e).split("\n");
    } else {
      var _e2 = "\n" === r[r.length - 1] ? r.length - 1 : r.length,
          _i = k(r, "\n", _e2 - 1, -n, !0);

      t = r.substring(_i + 1, _e2).split("\n");
    }
    return t.map(function (n) {
      return new L(e.type, n);
    });
  }

  function D(e, n) {
    return Array.prototype.push.apply(n, e), n;
  }

  function k(e, n, t, r, i) {
    var o = i ? -1 : 1;
    t -= o;

    for (var _f = 0; _f < r; _f++) {
      t = i ? e.lastIndexOf(n, t + o) : e.indexOf(n, t + o);
    }

    return t;
  }

  L.prototype.unified = function () {
    return x(this.type) + this.text;
  }, L.prototype.toString = function () {
    return this.unified();
  };
  var S = {
    hunk: function hunk(e, n, t) {
      return new w(e, n, t);
    },
    linechange: function linechange(e, n) {
      return new L(e, n);
    },
    lineChanges: M,
    change2string: function change2string(e, n) {
      n = n || 60;
      var t = e.count + ": " + x(e.type),
          r = Math.min(n - t.length, e.value.length - 1);
      return t + (e.value.substring(0, r).replace(/\n/g, ",") + (e.value.length > r + 1 ? "..." : ""));
    },
    changes2shorthand: function changes2shorthand(e) {
      return "{" + e.reduce(function (e, n) {
        for (var _t = 0; _t < n.count; _t++) {
          e += n.type;
        }

        return e;
      }, "") + "}";
    },
    nthIndexOf: k,
    makeHunks: function makeHunks(e, n, t) {
      var r = [],
          i = [],
          o = 0;

      function f() {
        if (i.length) {
          var _e3 = o,
              _n = o;

          if (r.length) {
            var _t2 = r[r.length - 1];
            _e3 += _t2.aoff + _t2.alen, _n += _t2.boff + _t2.blen;
          }

          r.push(new w(_e3, _n, i)), i = [], o = 0;
        }
      }

      for (var _r2 = 0; _r2 < e.length; _r2++) {
        var _s = e[_r2];

        if (_s.type === b) {
          var _a = _r2 > 0 ? t : 0,
              _u = _r2 < e.length - 1 ? n : 0,
              _c = Math.max(_s.count - (_a + _u), 0);

          _c > 0 ? (D(M(_s, _a), i), f(), D(M(_s, -_u), i), o = _c) : D(M(_s), i);
        } else D(M(_s), i);
      }

      return f(), r;
    },
    ADDED: _,
    REMOVED: P,
    UNMODIFIED: b
  },
      C = t(function (e, n) {
    function t(e) {
      return e.added ? S.ADDED : e.removed ? S.REMOVED : S.UNMODIFIED;
    }

    function r(e, n) {
      !function (e) {
        0 === e.length || (e[0].type = t(e[0]), e.reduce(function (e, n, r) {
          if (n.type = t(n), e.type === n.type) throw Error("repeating change types are not handled: " + e.type + " (at " + (r - 1) + " and " + r + ")");
          return n;
        }));
      }(e), (n = n || {}).aname = n.aname || "a", n.bname = n.bname || "b";
      var r = n.context || 0 === n.context ? n.context : 0;
      n.pre_context = n.pre_context || 0 === n.pre_context ? n.pre_context : r, n.post_context = n.post_context || 0 === n.post_context ? n.post_context : r;
      var i = S.makeHunks(e, n.pre_context, n.post_context);

      if (i.length) {
        var _e4 = [];
        return _e4.push("--- " + n.aname), _e4.push("+++ " + n.bname), i.forEach(function (n) {
          _e4.push(n.unified());
        }), _e4.join("\n");
      }

      return "";
    }

    function i(e, n, t) {
      e = Array.isArray(e) ? e.join("\n") + "\n" : e, n = Array.isArray(n) ? n.join("\n") + "\n" : n;
      var r = y.diffLines(e, n, t);
      return 1 !== r.length || r[0].added || r[0].removed ? r : [];
    }

    function o(e, n, t) {
      return r(i(e, n), t);
    }

    n.assertEqual = function (e, n, t, r, i) {
      i = i || console.log, t = t.ok || t;
      var f = o(e, n, {
        context: 3,
        aname: r + " (actual)",
        bname: r + " (expected)"
      });
      t(!f, r), f && f.split("\n").forEach(function (e) {
        i("  " + e);
      });
    }, n.diffAsText = o, n.formatLines = r, n.diffLines = i, Object.keys(y).forEach(function (e) {
      n[e] || (n[e] = y[e]);
    });
  }),
      T = C.assertEqual,
      E = C.diffAsText,
      O = C.formatLines,
      j = C.diffLines;
  e.default = C, e.assertEqual = T, e.diffAsText = E, e.formatLines = O, e.diffLines = j, Object.defineProperty(e, "__esModule", {
    value: !0
  });
});