chess-analysis-board
Version:
A comprehensive chess analysis board React component with move navigation, variation support, PGN import/export, and customizable keyboard shortcuts
1,931 lines • 341 kB
JavaScript
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var Re = (i, t, s) => Tv(i, typeof t != "symbol" ? t + "" : t, s);
import * as Nn from "react";
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var On = { exports: {} }, Mr = {};
/**
* @license React
* react-jsx-runtime.production.js
*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
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ref: l !== void 0 ? l : null,
props: u
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var Fr = {};
/**
* @license React
* react-jsx-runtime.development.js
*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
var Da;
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React keys must be passed directly to JSX without using spread:
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typeof M == "function" ? M.displayName || M.name || "Unknown" : M
), _(
M,
Ee,
Fe,
Be,
l(),
Oe,
Xe,
le
);
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S = {
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// All error codes, starting by 0:
function(i) {
return `The plugin for '${i}' has not been loaded into Immer. To enable the plugin, import and call \`enable${i}()\` when initializing your application.`;
},
function(i) {
return `produce can only be called on things that are draftable: plain objects, arrays, Map, Set or classes that are marked with '[immerable]: true'. Got '${i}'`;
},
"This object has been frozen and should not be mutated",
function(i) {
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},
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"The third argument to `produce` must be a function or undefined",
"First argument to `createDraft` must be a plain object, an array, or an immerable object",
"First argument to `finishDraft` must be a draft returned by `createDraft`",
function(i) {
return `'current' expects a draft, got: ${i}`;
},
"Object.defineProperty() cannot be used on an Immer draft",
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"Immer only supports deleting array indices",
"Immer only supports setting array indices and the 'length' property",
function(i) {
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}
// Note: if more errors are added, the errorOffset in Patches.ts should be increased
// See Patches.ts for additional errors
] : [];
function ut(i, ...t) {
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);
}
var _r = Object.getPrototypeOf;
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function hl(i) {
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function Bv(i, t) {
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function Un(i) {
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function Wn(i) {
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}
function ar(i) {
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function js(i, t) {
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writable: !0,
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enumerable: g.enumerable,
value: i[p]
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return Object.create(_r(i), a);
} else {
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if (a !== null && s)
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function Uv() {
ut(2);
}
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var Vr;
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}
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drafts_: [],
parent_: i,
immer_: t,
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canAutoFreeze_: !0,
unfinalizedDrafts_: 0
};
}
function ja(i, t) {
t && (ur("Patches"), i.patches_ = [], i.inversePatches_ = [], i.patchListener_ = t);
}
function As(i) {
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}
function Ps(i) {
i === Vr && (Vr = i.parent_);
}
function Aa(i) {
return Vr = Kv(Vr, i);
}
function zv(i) {
const t = i[vt];
t.type_ === 0 || t.type_ === 1 ? t.revoke_() : t.revoked_ = !0;
}
function Pa(i, t) {
t.unfinalizedDrafts_ = t.drafts_.length;
const s = t.drafts_[0];
return i !== void 0 && i !== s ? (s[vt].modified_ && (As(t), ut(4)), fr(i) && (i = Ln(t, i), t.parent_ || Mn(t, i)), t.patches_ && ur("Patches").generateReplacementPatches_(
s[vt].base_,
i,
t.patches_,
t.inversePatches_
)) : i = Ln(t, s, []), As(t), t.patches_ && t.patchListener_(t.patches_, t.inversePatches_), i !== dl ? i : void 0;
}
function Ln(i, t, s) {
if (Kn(t))
return t;
const a = t[vt];
if (!a)
return Rn(
t,
(l, u) => Ia(i, a, t, l, u, s)
), t;
if (a.scope_ !== i)
return t;
if (!a.modified_)
return Mn(i, a.base_, !0), a.base_;
if (!a.finalized_) {
a.finalized_ = !0, a.scope_.unfinalizedDrafts_--;
const l = a.copy_;
let u = l, p = !1;
a.type_ === 3 && (u = new Set(l), l.clear(), p = !0), Rn(
u,
(g, b) => Ia(i, a, l, g, b, s, p)
), Mn(i, l, !1), s && i.patches_ && ur("Patches").generatePatches_(
a,
s,
i.patches_,
i.inversePatches_
);
}
return a.copy_;
}
function Ia(i, t, s, a, l, u, p) {
if (process.env.NODE_ENV !== "production" && l === s && ut(5), Er(l)) {
const g = u && t && t.type_ !== 3 && // Set objects are atomic since they have no keys.
!Ns(t.assigned_, a) ? u.concat(a) : void 0, b = Ln(i, l, g);
if (gl(s, a, b), Er(b))
i.canAutoFreeze_ = !1;
else
return;
} else p && s.add(l);
if (fr(l) && !Kn(l)) {
if (!i.immer_.autoFreeze_ && i.unfinalizedDrafts_ < 1)
return;
Ln(i, l), (!t || !t.scope_.parent_) && typeof a != "symbol" && Object.prototype.propertyIsEnumerable.call(s, a) && Mn(i, l);
}
}
function Mn(i, t, s = !1) {
!i.parent_ && i.immer_.autoFreeze_ && i.canAutoFreeze_ && Hr(t, s);
}
function qv(i, t) {
const s = Array.isArray(i), a = {
type_: s ? 1 : 0,
// Track which produce call this is associated with.
scope_: t ? t.scope_ : pl(),
// True for both shallow and deep changes.
modified_: !1,
// Used during finalization.
finalized_: !1,
// Track which properties have been assigned (true) or deleted (false).
assigned_: {},
// The parent draft state.
parent_: t,
// The base state.
base_: i,
// The base proxy.
draft_: null,
// set below
// The base copy with any updated values.
copy_: null,
// Called by the `produce` function.
revoke_: null,
isManual_: !1
};
let l = a, u = Vs;
s && (l = [a], u = Gr);
const { revoke: p, proxy: g } = Proxy.revocable(l, u);
return a.draft_ = g, a.revoke_ = p, g;
}
var Vs = {
get(i, t) {
if (t === vt)
return i;
const s = ar(i);
if (!Ns(s, t))
return Hv(i, s, t);
const a = s[t];
return i.finalized_ || !fr(a) ? a : a === ps(i.base_, t) ? (vs(i), i.copy_[t] = Rs(a, i)) : a;
},
has(i, t) {
return t in ar(i);
},
ownKeys(i) {
return Reflect.ownKeys(ar(i));
},
set(i, t, s) {
const a = vl(ar(i), t);
if (a != null && a.set)
return a.set.call(i.draft_, s), !0;
if (!i.modified_) {
const l = ps(ar(i), t), u = l == null ? void 0 : l[vt];
if (u && u.base_ === s)
return i.copy_[t] = s, i.assigned_[t] = !1, !0;
if (Bv(s, l) && (s !== void 0 || Ns(i.base_, t)))
return !0;
vs(i), Is(i);
}
return i.copy_[t] === s && // special case: handle new props with value 'undefined'
(s !== void 0 || t in i.copy_) || // special case: NaN
Number.isNaN(s) && Number.isNaN(i.copy_[t]) || (i.copy_[t] = s, i.assigned_[t] = !0), !0;
},
deleteProperty(i, t) {
return ps(i.base_, t) !== void 0 || t in i.base_ ? (i.assigned_[t] = !1, vs(i), Is(i)) : delete i.assigned_[t], i.copy_ && delete i.copy_[t], !0;
},
// Note: We never coerce `desc.value` into an Immer draft, because we can't make
// the same guarantee in ES5 mode.
getOwnPropertyDescriptor(i, t) {
const s = ar(i), a = Reflect.getOwnPropertyDescriptor(s, t);
return a && {
writable: !0,
configurable: i.type_ !== 1 || t !== "length",
enumerable: a.enumerable,
value: s[t]
};
},
defineProperty() {
ut(11);
},
getPrototypeOf(i) {
return _r(i.base_);
},
setPrototypeOf() {
ut(12);
}
}, Gr = {};
Rn(Vs, (i, t) => {
Gr[i] = function() {
return arguments[0] = arguments[0][0], t.apply(this, arguments);
};
});
Gr.deleteProperty = function(i, t) {
return process.env.NODE_ENV !== "production" && isNaN(parseInt(t)) && ut(13), Gr.set.call(this, i, t, void 0);
};
Gr.set = function(i, t, s) {
return process.env.NODE_ENV !== "production" && t !== "length" && isNaN(parseInt(t)) && ut(14), Vs.set.call(this, i[0], t, s, i[0]);
};
function ps(i, t) {
const s = i[vt];
return (s ? ar(s) : i)[t];
}
function Hv(i, t, s) {
var l;
const a = vl(t, s);
return a ? "value" in a ? a.value : (
// This is a very special case, if the prop is a getter defined by the
// prototype, we should invoke it with the draft as context!
(l = a.get) == null ? void 0 : l.call(i.draft_)
) : void 0;
}
function vl(i, t) {
if (!(t in i))
return;
let s = _r(i);
for (; s; ) {
const a = Object.getOwnPropertyDescriptor(s, t);
if (a)
return a;
s = _r(s);
}
}
function Is(i) {
i.modified_ || (i.modified_ = !0, i.parent_ && Is(i.parent_));
}
function vs(i) {
i.copy_ || (i.copy_ = js(
i.base_,
i.scope_.immer_.useStrictShallowCopy_
));
}
var Vv = class {
constructor(i) {
this.autoFreeze_ = !0, this.useStrictShallowCopy_ = !1, this.produce = (t, s, a) => {
if (typeof t == "function" && typeof s != "function") {
const u = s;
s = t;
const p = this;
return function(b = u, ..._) {
return p.produce(b, (O) => s.call(this, O, ..._));
};
}
typeof s != "function" && ut(6), a !== void 0 && typeof a != "function" && ut(7);
let l;
if (fr(t)) {
const u = Aa(this), p = Rs(t, void 0);
let g = !0;
try {
l = s(p), g = !1;
} finally {
g ? As(u) : Ps(u);
}
return ja(u, a), Pa(l, u);
} else if (!t || typeof t != "object") {
if (l = s(t), l === void 0 && (l = t), l === dl && (l = void 0), this.autoFreeze_ && Hr(l, !0), a) {
const u = [], p = [];
ur("Patches").generateReplacementPatches_(t, l, u, p), a(u, p);
}
return l;
} else
ut(1, t);
}, this.produceWithPatches = (t, s) => {
if (typeof t == "function")
return (p, ...g) => this.produceWithPatches(p, (b) => t(b, ...g));
let a, l;
return [this.produce(t, s, (p, g) => {
a = p, l = g;
}), a, l];
}, typeof (i == null ? void 0 : i.autoFreeze) == "boolean" && this.setAutoFreeze(i.autoFreeze), typeof (i == null ? void 0 : i.useStrictShallowCopy) == "boolean" && this.setUseStrictShallowCopy(i.useStrictShallowCopy);
}
createDraft(i) {
fr(i) || ut(8), Er(i) && (i = Gv(i));
const t = Aa(this), s = Rs(i, void 0);
return s[vt].isManual_ = !0, Ps(t), s;
}
finishDraft(i, t) {
const s = i && i[vt];
(!s || !s.isManual_) && ut(9);
const { scope_: a } = s;
return ja(a, t), Pa(void 0, a);
}
/**
* Pass true to automatically freeze all copies created by Immer.
*
* By default, auto-freezing is enabled.
*/
setAutoFreeze(i) {
this.autoFreeze_ = i;
}
/**
* Pass true to enable strict shallow copy.
*
* By default, immer does not copy the object descriptors such as getter, setter and non-enumrable properties.
*/
setUseStrictShallowCopy(i) {
this.useStrictShallowCopy_ = i;
}
applyPatches(i, t) {
let s;
for (s = t.length - 1; s >= 0; s--) {
const l = t[s];
if (l.path.length === 0 && l.op === "replace") {
i = l.value;
break;
}
}
s > -1 && (t = t.slice(s + 1));
const a = ur("Patches").applyPatches_;
return Er(i) ? a(i, t) : this.produce(
i,
(l) => a(l, t)
);
}
};
function Rs(i, t) {
const s = Un(i) ? ur("MapSet").proxyMap_(i, t) : Wn(i) ? ur("MapSet").proxySet_(i, t) : qv(i, t);
return (t ? t.scope_ : pl()).drafts_.push(s), s;
}
function Gv(i) {
return Er(i) || ut(10, i), ml(i);
}
function ml(i) {
if (!fr(i) || Kn(i))
return i;
const t = i[vt];
let s;
if (t) {
if (!t.modified_)
return t.base_;
t.finalized_ = !0, s = js(i, t.scope_.immer_.useStrictShallowCopy_);
} else
s = js(i, !0);
return Rn(s, (a, l) => {
gl(s, a, ml(l));
}), t && (t.finalized_ = !1), s;
}
var mt = new Vv(), Yv = mt.produce;
mt.produceWithPatches.bind(
mt
);
mt.setAutoFreeze.bind(mt);
mt.setUseStrictShallowCopy.bind(mt);
mt.applyPatches.bind(mt);
mt.createDraft.bind(mt);
mt.finishDraft.bind(mt);
function Qv(i) {
var t = ve(function() {
return Hr(typeof i == "function" ? i() : i, !0);
}), s = t[1];
return [t[0], lr(function(a) {
s(typeof a == "function" ? Yv(a) : Hr(a));
}, [])];
}
function Xv(i) {
return i !== null ? { comment: i, variations: [] } : { variations: [] };
}
function Jv(i, t, s, a, l) {
const u = { move: i, variations: l };
return t && (u.suffix = t), s && (u.nag = s), a !== null && (u.comment = a), u;
}
function Zv(...i) {
const [t, ...s] = i;
let a = t;
for (const l of s)
l !== null && (a.variations = [l, ...l.variations], l.variations = [], a = l);
return t;
}
function e1(i, t) {
if (t.marker && t.marker.comment) {
let s = t.root;
for (; ; ) {
const a = s.variations[0];
if (!a) {
s.comment = t.marker.comment;
break;
}
s = a;
}
}
return {
headers: i,
root: t.root,
result: (t.marker && t.marker.result) ?? void 0
};
}
function t1(i, t) {
function s() {
this.constructor = i;
}
s.prototype = t.prototype, i.prototype = new s();
}
function Sr(i, t, s, a) {
var l = Error.call(this, i);
return Object.setPrototypeOf && Object.setPrototypeOf(l, Sr.prototype), l.expected = t, l.found = s, l.location = a, l.name = "SyntaxError", l;
}
t1(Sr, Error);
function ms(i, t, s) {
return s = s || " ", i.length > t ? i : (t -= i.length, s += s.repeat(t), i + s.slice(0, t));
}
Sr.prototype.format = function(i) {
var t = "Error: " + this.message;
if (this.location) {
var s = null, a;
for (a = 0; a < i.length; a++)
if (i[a].source === this.location.source) {
s = i[a].text.split(/\r\n|\n|\r/g);
break;
}
var l = this.location.start, u = this.location.source && typeof this.location.source.offset == "function" ? this.location.source.offset(l) : l, p = this.location.source + ":" + u.line + ":" + u.column;
if (s) {
var g = this.location.end, b = ms("", u.line.toString().length, " "), _ = s[l.line - 1], O = l.line === g.line ? g.column : _.length + 1, N = O - l.column || 1;
t += `
--> ` + p + `
` + b + ` |
` + u.line + " | " + _ + `
` + b + " | " + ms("", l.column - 1, " ") + ms("", N, "^");
} else
t += `
at ` + p;
}
return t;
};
Sr.buildMessage = function(i, t) {
var s = {
literal: function(_) {
return '"' + l(_.text) + '"';
},
class: function(_) {
var O = _.parts.map(function(N) {
return Array.isArray(N) ? u(N[0]) + "-" + u(N[1]) : u(N);
});
return "[" + (_.inverted ? "^" : "") + O.join("") + "]";
},
any: function() {
return "any character";
},
end: function() {
return "end of input";
},
other: function(_) {
return _.description;
}
};
function a(_) {
return _.charCodeAt(0).toString(16).toUpperCase();
}
function l(_) {
return _.replace(/\\/g, "\\\\").replace(/"/g, '\\"').replace(/\0/g, "\\0").replace(/\t/g, "\\t").replace(/\n/g, "\\n").replace(/\r/g, "\\r").replace(/[\x00-\x0F]/g, function(O) {
return "\\x0" + a(O);
}).replace(/[\x10-\x1F\x7F-\x9F]/g, function(O) {
return "\\x" + a(O);
});
}
function u(_) {
return _.replace(/\\/g, "\\\\").replace(/\]/g, "\\]").replace(/\^/g, "\\^").replace(/-/g, "\\-").replace(/\0/g, "\\0").replace(/\t/g, "\\t").replace(/\n/g, "\\n").replace(/\r/g, "\\r").replace(/[\x00-\x0F]/g, function(O) {
return "\\x0" + a(O);
}).replace(/[\x10-\x1F\x7F-\x9F]/g, function(O) {
return "\\x" + a(O);
});
}
function p(_) {
return s[_.type](_);
}
function g(_) {
var O = _.map(p), N, S;
if (O.sort(), O.length > 0) {
for (N = 1, S = 1; N < O.length; N++)
O[N - 1] !== O[N] && (O[S] = O[N], S++);
O.length = S;
}
switch (O.length) {
case 1:
return O[0];
case 2:
return O[0] + " or " + O[1];
default:
return O.slice(0, -1).join(", ") + ", or " + O[O.length - 1];
}
}
function b(_) {
return _ ? '"' + l(_) + '"' : "end of input";
}
return "Expected " + g(i) + " but " + b(t) + " found.";
};
function r1(i, t) {
t = t !== void 0 ? t : {};
var s = {}, a = t.grammarSource, l = { pgn: Tr }, u = Tr, p = "[", g = '"', b = "]", _ = ".", O = "O-O-O", N = "O-O", S = "0-0-0", P = "0-0", k = "$", L = "{", K = "}", U = ";", z = "(", W = ")", oe = "1-0", X = "0-1", d = "1/2-1/2", re = "*", r = /^[a-zA-Z]/, we = /^[^"]/, de = /^[0-9]/, ye = /^[.]/, he = /^[a-zA-Z1-8\-=]/, _e = /^[+#]/, me = /^[!?]/, Y = /^[^}]/, Z = /^[^\r\n]/, be = /^[ \t\r\n]/, Ie = Ye("tag pair"), Me = ce("[", !1), M = ce('"', !1), ae = ce("]", !1), Oe = Ye("tag name"), ke = Ae([["a", "z"], ["A", "Z"]], !1, !1), Be = Ye("tag value"), Fe = Ae(['"'], !0, !1), Xe = Ye("move number"), le = Ae([["0", "9"]], !1, !1), Ee = ce(".", !1), Ue = Ae(["."], !1, !1), xe = Ye("standard algebraic notation"), Pe = ce("O-O-O", !1), Le = ce("O-O", !1), tt = ce("0-0-0", !1), rt = ce("0-0", !1), Ct = Ae([["a", "z"], ["A", "Z"], ["1", "8"], "-", "="], !1, !1), nt = Ae(["+", "#"], !1, !1), Rt = Ye("suffix annotation"), wt = Ae(["!", "?"], !1, !1), Je = Ye("NAG"), Lt = ce("$", !1), _t = Ye("brace comment"), kt = ce("{", !1), Nt = Ae(["}"], !0, !1), jt = ce("}", !1), st = Ye("rest of line comment"), Et = ce(";", !1), it = Ae(["\r", `
`], !0, !1), Ft = Ye("variation"), Bt = ce("(", !1), Ut = ce(")", !1), ze = Ye("game termination marker"), at = ce("1-0", !1), St = ce("0-1", !1), Ot = ce("1/2-1/2", !1), Wt = ce("*", !1), er = Ye("whitespace"), Kt = Ae([" ", " ", "\r", `
`], !1, !1), xt = function(E, x) {
return e1(E, x);
}, lt = function(E) {
return Object.fromEntries(E);
}, At = function(E, x) {
return [E, x];
}, zt = function(E, x) {
return { root: E, marker: x };
}, A = function(E, x) {
return Zv(Xv(E), ...x.flat());
}, I = function(E, x, T, ee, ne) {
return Jv(E, x, T, ee, ne);
}, B = function(E) {
return E;
}, V = function(E) {
return E.replace(/[\r\n]+/g, " ");
}, G = function(E) {
return E.trim();
}, Q = function(E) {
return E;
}, se = function(E, x) {
return { result: E, comment: x };
}, w = t.peg$currPos | 0, H = [{ line: 1, column: 1 }], $e = w, ie = t.peg$maxFailExpected || [], j = t.peg$silentFails | 0, Se;
if (t.startRule) {
if (!(t.startRule in l))
throw new Error(`Can't start parsing from rule "` + t.startRule + '".');
u = l[t.startRule];
}
function ce(E, x) {
return { type: "literal", text: E, ignoreCase: x };
}
function Ae(E, x, T) {
return { type: "class", parts: E, inverted: x, ignoreCase: T };
}
function Ze() {
return { type: "end" };
}
function Ye(E) {
return { type: "other", description: E };
}
function Or(E) {
var x = H[E], T;
if (x)
return x;
if (E >= H.length)
T = H.length - 1;
else
for (T = E; !H[--T]; )
;
for (x = H[T], x = {
line: x.line,
column: x.column
}; T < E; )
i.charCodeAt(T) === 10 ? (x.line++, x.column = 1) : x.column++, T++;
return H[E] = x, x;
}
function xr(E, x, T) {
var ee = Or(E), ne = Or(x), De = {
source: a,
start: {
offset: E,
line: ee.line,
column: ee.column
},
end: {
offset: x,
line: ne.line,
column: ne.column
}
};
return De;
}
function J(E) {
w < $e || (w > $e && ($e = w, ie = []), ie.push(E));
}
function Xr(E, x, T) {
return new Sr(
Sr.buildMessage(E, x),
E,
x,
T
);
}
function Tr() {
var E, x, T;
return E = w, x = Jr(), T = tn(), E = xt(x, T), E;
}
function Jr() {
var E, x, T;
for (E = w, x = [], T = Dr(); T !== s; )
x.push(T), T = Dr();
return T = He(), E = lt(x), E;
}
function Dr() {
var E, x, T, ee, ne, De, Pt;
return j++, E = w, He(), i.charCodeAt(w) === 91 ? (x = p, w++) : (x = s, j === 0 && J(Me)), x !== s ? (He(), T = Zr(), T !== s ? (He(), i.charCodeAt(w) === 34 ? (ee = g, w++) : (ee = s, j === 0 && J(M)), ee !== s ? (ne = en(), i.charCodeAt(w) === 34 ? (De = g, w++) : (De = s, j === 0 && J(M)), De !== s ? (He(), i.charCodeAt(w) === 93 ? (Pt = b, w++) : (Pt = s, j === 0 && J(ae)), Pt !== s ? E = At(T, ne) : (w = E, E = s)) : (w = E, E = s)) : (w = E, E = s)) : (w = E, E = s)) : (w = E, E = s), j--, E === s && j === 0 && J(Ie), E;
}
function Zr() {
var E, x, T;
if (j++, E = w, x = [], T = i.charAt(w), r.test(T) ? w++ : (T = s, j === 0 && J(ke)), T !== s)
for (; T !== s; )
x.push(T), T = i.charAt(w), r.test(T) ? w++ : (T = s, j === 0 && J(ke));
else
x = s;
return x !== s ? E = i.substring(E, w) : E = x, j--, E === s && (x = s, j === 0 && J(Oe)), E;
}
function en() {
var E, x, T;
for (j++, E = w, x = [], T = i.charAt(w), we.test(T) ? w++ : (T = s, j === 0 && J(Fe)); T !== s; )
x.push(T), T = i.charAt(w), we.test(T) ? w++ : (T = s, j === 0 && J(Fe));
return E = i.substring(E, w), j--, x = s, j === 0 && J(Be), E;
}
function tn() {
var E, x, T;
return E = w, x = kr(), He(), T = ln(), T === s && (T = null), He(), E = zt(x, T), E;
}
function kr() {
var E, x, T, ee;
for (E = w, x = gr(), x === s && (x = null), T = [], ee = Nr(); ee !== s; )
T.push(ee), ee = Nr();
return E = A(x, T), E;
}
function Nr() {
var E, x, T, ee, ne, De, Pt, tr;
if (E = w, He(), rn(), He(), x = nn(), x !== s) {
for (T = sn(), T === s && (T = null), ee = [], ne = jr(); ne !== s; )
ee.push(ne), ne = jr();
for (ne = He(), De = gr(), De === s && (De = null), Pt = [], tr = Ar(); tr !== s; )
Pt.push(tr), tr = Ar();
E = I(x, T, ee, De, Pt);
} else
w = E, E = s;
return E;
}
function rn() {
var E, x, T, ee, ne, De;
for (j++, E = w, x = [], T = i.charAt(w), de.test(T) ? w++ : (T = s, j === 0 && J(le)); T !== s; )
x.push(T), T = i.charAt(w), de.test(T) ? w++ : (T = s, j === 0 && J(le));
if (i.charCodeAt(w) === 46 ? (T = _, w++) : (T = s, j === 0 && J(Ee)), T !== s) {
for (ee = He(), ne = [], De = i.charAt(w), ye.test(De) ? w++ : (De = s, j === 0 && J(Ue)); De !== s; )
ne.push(De), De = i.charAt(w), ye.test(De) ? w++ : (De = s, j === 0 && J(Ue));
x = [x, T, ee, ne], E = x;
} else
w = E, E = s;
return j--, E === s && (x = s, j === 0 && J(Xe)), E;
}
function nn() {
var E, x, T, ee, ne, De;
if (j++, E = w, x = w, i.substr(w, 5) === O ? (T = O, w += 5) : (T = s, j === 0 && J(Pe)), T === s && (i.substr(w, 3) === N ? (T = N, w += 3) : (T = s, j === 0 && J(Le)), T === s && (i.substr(w, 5) === S ? (T = S, w += 5) : (T = s, j === 0 && J(tt)), T === s && (i.substr(w, 3) === P ? (T = P, w += 3) : (T = s, j === 0 && J(rt)), T === s))))
if (T = w, ee = i.charAt(w), r.test(ee) ? w++ : (ee = s, j === 0 && J(ke)), ee !== s) {
if (ne = [], De = i.charAt(w), he.test(De) ? w++ : (De = s, j === 0 && J(Ct)), De !== s)
for (; De !== s; )
ne.push(De), De = i.charAt(w), he.test(De) ? w++ : (De = s, j === 0 && J(Ct));
else
ne = s;
ne !== s ? (ee = [ee, ne], T = ee) : (w = T, T = s);
} else
w = T, T = s;
return T !== s ? (ee = i.charAt(w), _e.test(ee) ? w++ : (ee = s, j === 0 && J(nt)), ee === s && (ee = null), T = [T, ee], x = T) : (w = x, x = s), x !== s ? E = i.substring(E, w) : E = x, j--, E === s && (x = s, j === 0 && J(xe)), E;
}
function sn() {
var E, x, T;
for (j++, E = w, x = [], T = i.charAt(w), me.test(T) ? w++ : (T = s, j === 0 && J(wt)); T !== s; )
x.push(T), x.length >= 2 ? T = s : (T = i.charAt(w), me.test(T) ? w++ : (T = s, j === 0 && J(wt)));
return x.length < 1 ? (w = E, E = s) : E = x, j--, E === s && (x = s, j === 0 && J(Rt)), E;
}
function jr() {
var E, x, T, ee, ne;
if (j++, E = w, He(), i.charCodeAt(w) === 36 ? (x = k, w++) : (x = s, j === 0 && J(Lt)), x !== s) {
if (T = w, ee = [], ne = i.charAt(w), de.test(ne) ? w++ : (ne = s, j === 0 && J(le)), ne !== s)
for (; ne !== s; )
ee.push(ne), ne = i.charAt(w), de.test(ne) ? w++ : (ne = s, j === 0 && J(le));
else
ee = s;
ee !== s ? T = i.substring(T, w) : T = ee, T !== s ? E = B(T) : (w = E, E = s);
} else
w = E, E = s;
return j--, E === s && j === 0 && J(Je), E;
}
function gr() {
var E;
return E = on(), E === s && (E = an()), E;
}
function on() {
var E, x, T, ee, ne;
if (j++, E = w, i.charCodeAt(w) === 123 ? (x = L, w++) : (x = s, j === 0 && J(kt)), x !== s) {
for (T = w, ee = [], ne = i.charAt(w), Y.test(ne) ? w++ : (ne = s, j === 0 && J(Nt)); ne !== s; )
ee.push(ne), ne = i.charAt(w), Y.test(ne) ? w++ : (ne = s, j === 0 && J(Nt));
T = i.substring(T, w), i.charCodeAt(w) === 125 ? (ee = K, w++) : (ee = s, j === 0 && J(jt)), ee !== s ? E = V(T) : (w = E, E = s);
} else
w = E, E = s;
return j--, E === s && (x = s, j === 0 && J(_t)), E;
}
function an() {
var E, x, T, ee, ne;
if (j++, E = w, i.charCodeAt(w) === 59 ? (x = U, w++) : (x = s, j === 0 && J(Et)), x !== s) {
for (T = w, ee = [], ne = i.charAt(w), Z.test(ne) ? w++ : (ne = s, j === 0 && J(it)); ne !== s; )
ee.push(ne), ne = i.charAt(w), Z.test(ne) ? w++ : (ne = s, j === 0 && J(it));
T = i.substring(T, w), E = G(T);
} else
w = E, E = s;
return j--, E === s && (x = s, j === 0 && J(st)), E;
}
function Ar() {
var E, x, T, ee;
return j++, E = w, He(), i.charCodeAt(w) === 40 ? (x = z, w++) : (x = s, j === 0 && J(Bt)), x !== s ? (T = kr(), T !== s ? (He(), i.charCodeAt(w) === 41 ? (ee = W, w++) : (ee = s, j === 0 && J(Ut)), ee !== s ? E = Q(T) : (w = E, E = s)) : (w = E, E = s)) : (w = E, E = s), j--, E === s && j === 0 && J(Ft), E;
}
function ln() {
var E, x, T;
return j++, E = w, i.substr(w, 3) === oe ? (x = oe, w += 3) : (x = s, j === 0 && J(at)), x === s && (i.substr(w, 3) === X ? (x = X, w += 3) : (x = s, j === 0 && J(St)), x === s && (i.substr(w, 7) === d ? (x = d, w += 7) : (x = s, j === 0 && J(Ot)), x === s && (i.charCodeAt(w) === 42 ? (x = re, w++) : (x = s, j === 0 && J(Wt))))), x !== s ? (He(), T = gr(), T === s && (T = null), E = se(x, T)) : (w = E, E = s), j--, E === s && (x = s, j === 0 && J(ze)), E;
}
function He() {
var E, x;
for (j++, E = [], x = i.charAt(w), be.test(x) ? w++ : (x = s, j === 0 && J(Kt)); x !== s; )
E.push(x), x = i.charAt(w), be.test(x) ? w++ : (x = s, j === 0 && J(Kt));
return j--, x = s, j === 0 && J(er), E;
}
if (Se = u(), t.peg$library)
return (
/** @type {any} */
{
peg$result: Se,
peg$currPos: w,
peg$FAILED: s,
peg$maxFailExpected: ie,
peg$maxFailPos: $e
}
);
if (Se !== s && w === i.length)
return Se;
throw Se !== s && w < i.length && J(Ze()), Xr(
ie,
$e < i.length ? i.charAt($e) : null,
$e < i.length ? xr($e, $e + 1) : xr($e, $e)
);
}
/**
* @license
* Copyright (c) 2025, Jeff Hlywa (jhlywa@gmail.com)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
const jn = 0xffffffffffffffffn;
function bs(i, t) {
return (i << t | i >> 64n - t) & 0xffffffffffffffffn;
}
function Ra(i, t) {
return i * t & jn;
}
function n1(i) {
return function() {
let t = BigInt(i & jn), s = BigInt(i >> 64n & jn);
const a = Ra(bs(Ra(t, 5n), 7n), 9n);
return s ^= t, t = (bs(t, 24n) ^ s ^ s << 16n) & jn, s = bs(s, 37n), i = s << 64n | t, a;
};
}
const zn = n1(0xa187eb39cdcaed8f31c4b365b102e01en), s1 = Array.from({ length: 2 }, () => Array.from({ length: 6 }, () => Array.from({ length: 128 }, () => zn()))), i1 = Array.from({ length: 8 }, () => zn()), o1 = Array.from({ length: 16 }, () => zn()), ys = zn(), et = "w", pt = "b", Ke = "p", Ls = "n", An = "b", Wr = "r", Jt = "q", qe = "k", $s = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1";
class xn {
constructor(t, s) {
Re(this, "color");
Re(this, "from");
Re(this, "to");
Re(this, "piece");
Re(this, "captured");
Re(this, "promotion");
/**
* @deprecated This field is deprecated and will be removed in version 2.0.0.
* Please use move descriptor functions instead: `isCapture`, `isPromotion`,
* `isEnPassant`, `isKingsideCastle`, `isQueensideCastle`, `isCastle`, and
* `isBigPawn`
*/
Re(this, "flags");
Re(this, "san");
Re(this, "lan");
Re(this, "before");
Re(this, "after");
const { color: a, piece: l, from: u, to: p, flags: g, captured: b, promotion: _ } = s, O = Ge(u), N = Ge(p);
this.color = a, this.piece = l, this.from = O, this.to = N, this.san = t._moveToSan(s, t._moves({ legal: !0 })), this.lan = O + N, this.before = t.fen(), t._makeMove(s), this.after = t.fen(), t._undoMove(), this.flags = "";
for (const S in ue)
ue[S] & g && (this.flags += or[S]);
b && (this.captured = b), _ && (this.promotion = _, this.lan += _);
}
isCapture() {
return this.flags.indexOf(or.CAPTURE) > -1;
}
isPromotion() {
return this.flags.indexOf(or.PROMOTION) > -1;
}
isEnPassant() {
return this.flags.indexOf(or.EP_CAPTURE) > -1;
}
isKingsideCastle() {
return this.flags.indexOf(or.KSIDE_CASTLE) > -1;
}
isQueensideCastle() {
return this.flags.indexOf(or.QSIDE_CASTLE) > -1;
}
isBigPawn() {
return this.flags.indexOf(or.BIG_PAWN) > -1;
}
}
const Qe = -1, or = {
NORMAL: "n",
CAPTURE: "c",
BIG_PAWN: "b",
EP_CAPTURE: "e",
PROMOTION: "p",
KSIDE_CASTLE: "k",
QSIDE_CASTLE: "q",
NULL_MOVE: "-"
}, ue = {
NORMAL: 1,
CAPTURE: 2,
BIG_PAWN: 4,
EP_CAPTURE: 8,
PROMOTION: 16,
KSIDE_CASTLE: 32,
QSIDE_CASTLE: 64,
NULL_MOVE: 128
}, Ms = {
Event: "?",
Site: "?",
Date: "????.??.??",
Round: "?",
White: "?",
Black: "?",
Result: "*"
}, a1 = {
WhiteTitle: null,
BlackTitle: null,
WhiteElo: null,
BlackElo: null,
WhiteUSCF: null,
BlackUSCF: null,
WhiteNA: null,
BlackNA: null,
WhiteType: null,
BlackType: null,
EventDate: null,
EventSponsor: null,
Section: null,
Stage: null,
Board: null,
Opening: null,
Variation: null,
SubVariation: null,
ECO: null,
NIC: null,
Time: null,
UTCTime: null,
UTCDate: null,
TimeControl: null,
SetUp: null,
FEN: null,
Termination: null,
Annotator: null,
Mode: null,
PlyCount: null
}, l1 = {
...Ms,
...a1
}, fe = {
a8: 0,
b8: 1,
c8: 2,
d8: 3,
e8: 4,
f8: 5,
g8: 6,
h8: 7,
a7: 16,
b7: 17,
c7: 18,
d7: 19,
e7: 20,
f7: 21,
g7: 22,
h7: 23,
a6: 32,
b6: 33,
c6: 34,
d6: 35,
e6: 36,
f6: 37,
g6: 38,
h6: 39,
a5: 48,
b5: 49,
c5: 50,
d5: 51,
e5: 52,
f5: 53,
g5: 54,
h5: 55,
a4: 64,
b4: 65,
c4: 66,
d4: 67,
e4: 68,
f4: 69,
g4: 70,
h4: 71,
a3: 80,
b3: 81,
c3: 82,
d3: 83,
e3: 84,
f3: 85,
g3: 86,
h3: 87,
a2: 96,
b2: 97,
c2: 98,
d2: 99,
e2: 100,
f2: 101,
g2: 102,
h2: 103,
a1: 112,
b1: 113,
c1: 114,
d1: 115,
e1: 116,
f1: 117,
g1: 118,
h1: 119
}, Cs = {
b: [16, 32, 17, 15],
w: [-16, -32, -17, -15]
}, La = {
n: [-18, -33, -31, -14, 18, 33, 31, 14],
b: [-17, -15, 17, 15],
r: [-16, 1, 16, -1],
q: [-17, -16, -15, 1, 17, 16, 15, -1],
k: [-17, -16, -15, 1, 17, 16, 15, -1]
}, c1 = [
20,
0,
0,
0,
0,
0,
0,
24,
0,
0,
0,
0,
0,
0,
20,
0,
0,
20,
0,
0,
0,
0,
0,
24,
0,
0,
0,
0,
0,
20,
0,
0,
0,
0,
20,
0,
0,
0,
0,
24,
0,
0,
0,
0,
20,
0,
0,
0,
0,
0,
0,
20,
0,
0,
0,
24,
0,
0,
0,
20,
0,
0,
0,
0,
0,
0,
0,
0,
20,
0,
0,
24,
0,
0,
20,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
20,
2,
24,
2,
20,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
2,
53,
56,
53,
2,
0,
0,
0,
0,
0,
0,
24,
24,
24,
24,
24,
24,
56,
0,
56,
24,
24,
24,
24,
24,
24,
0,
0,
0,
0,
0,
0,
2,
53,
56,
53,
2,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
20,
2,
24,
2,
20,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
20,
0,
0,
24,
0,
0,
20,
0,
0,
0,
0,
0,
0,
0,
0,
20,
0,
0,
0,
24,
0,
0,
0,
20,
0,
0,
0,
0,
0,
0,
20,
0,
0,
0,
0,
24,
0,
0,
0,
0,
20,
0,
0,
0,
0,
20,
0,
0,
0,
0,
0,
24,
0,
0,
0,
0,
0,
20,
0,
0,
20,
0,
0,
0,
0,
0,
0,
24,
0,
0,
0,
0,
0,
0,
20
], f1 = [
17,
0,
0,
0,
0,
0,
0,
16,
0,
0,
0,
0,
0,
0,
15,
0,
0,
17,
0,
0,
0,
0,
0,
16,
0,
0,
0,
0,
0,
15,
0,
0,
0,
0,
17,
0,
0,
0,
0,
16,
0,
0,
0,
0,
15,
0,
0,
0,
0,
0,
0,
17,
0,
0,
0,
16,
0,
0,
0,
15,
0,
0,
0,
0,
0,
0,
0,
0,
17,
0,
0,
16,
0,
0,
15,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
17,
0,
16,
0,
15,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
17,
16,
15,
0,
0,
0,
0,
0,
0,
0,
1,
1,
1,
1,
1,
1,
1,
0,
-1,
-1,
-1,
-1,
-1,
-1,
-1,
0,
0,
0,
0,
0,
0,
0,
-15,
-16,
-17,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
-15,
0,
-16,
0,
-17,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
-15,
0,
0,
-16,
0,
0,
-17,
0,
0,
0,
0,
0,
0,
0,
0,
-15,
0,
0,
0,
-16,
0,
0,
0,
-17,
0,
0,
0,
0,
0,
0,
-15,
0,
0,
0,
0,
-16,
0,
0,
0,
0,
-17,
0,
0,
0,
0,
-15,
0,
0,
0,
0,
0,
-16,
0,
0,
0,
0,
0,
-17,
0,
0,
-15,
0,
0,
0,
0,
0,
0,
-16,
0,
0,
0,
0,
0,
0,
-17
], u1 = { p: 1, n: 2, b: 4, r: 8, q: 16, k: 32 }, d1 = "pnbrqkPNBRQK", Ma = [Ls, An, Wr, Jt], h1 = 7, g1 = 6, p1 = 1, v1 = 0, Tn = {
[qe]: ue.KSIDE_CASTLE,
[Jt]: ue.QSIDE_CASTLE
}, Qt = {
w: [
{ square: fe.a1, flag: ue.QSIDE_CASTLE },
{ square: fe.h1, flag: ue.KSIDE_CASTLE }
],
b: [
{ square: fe.a8, flag: ue.QSIDE_CASTLE },
{ square: fe.h8, flag: ue.KSIDE_CASTLE }
]
}, m1 = { b: p1, w: g1 }, ws = "--";
function cr(i) {
return i >> 4;
}
function Yr(i) {
return i & 15;
}
function bl(i) {
return "0123456789".indexOf(i) !== -1;
}
function Ge(i) {
const t = Yr(i), s = cr(i);
return "abcdefgh".substring(t, t + 1) + "87654321".substring(s, s + 1);
}
function Br(i) {
return i === et ? pt : et;
}
function b1(i) {
const t = i.split(/\s+/);
if (t.length !== 6)
return {
ok: !1,
error: "Invalid FEN: must contain six space-delimited fields"
};
const s = parseInt(t[5], 10);
if (isNaN(s) || s <= 0)
return {
ok: !1,
error: "Invalid FEN: move number must be a positive integer"
};
const a = parseInt(t[4], 10);
if (isNaN(a) || a < 0)
return {
ok: !1,
error: "Invalid FEN: half move counter number must be a non-negative integer"
};
if (!/^(-|[abcdefgh][36])$/.test(t[3]))
return { ok: !1, error: "Invalid FEN: en-passant square is invalid" };
if (/[^kKqQ-]/.test(t[2]))
return { ok: !1, error: "Invalid FEN: castling availability is invalid" };
if (!/^(w|b)$/.test(t[1]))
return { ok: !1, error: "Invalid FEN: side-to-move is invalid" };
const l = t[0].split("/");
if (l.length !== 8)
return {
ok: !1,
error: "Invalid FEN: piece data does not contain 8 '/'-delimited rows"
};
for (let p = 0; p < l.length; p++) {
let g = 0, b = !1;
for (let _ = 0; _ < l[p].length; _++)
if (bl(l[p][_])) {
if (b)
return {
ok: !1,
error: "Invalid FEN: piece data is invalid (consecutive number)"
};
g += parseInt(l[p][_], 10), b = !0;
} else {
if (!/^[prnbqkPRNBQK]$/.test(l[p][_]))
return {
ok: !1,
error: "Invalid FEN: piece data is invalid (invalid piece)"
};
g += 1, b = !1;
}
if (g !== 8)
return {
ok: !1,
error: "Invalid FEN: piece data is invalid (too many squares in rank)"
};
}
if (t[3][1] == "3" && t[1] == "w" || t[3][1] == "6" && t[1] == "b")
return { ok: !1, error: "Invalid FEN: illegal en-passant square" };
const u = [
{ color: "white", regex: /K/g },
{ color: "black", regex: /k/g }
];
for (const { color: p, regex: g } of u) {
if (!g.test(t[0]))
return { ok: !1, error: `Invalid FEN: missing ${p} king` };
if ((t[0].match(g) || []).length > 1)
return { ok: !1, error: `Invalid FEN: too many ${p} kings` };
}
return Array.from(l[0] + l[7]).some((p) => p.toUpperCase() === "P") ? {
ok: !1,
error: "Invalid FEN: some pawns are on the edge rows"
} : { ok: !0 };
}
function y1(i, t) {
const s = i.from, a = i.to, l = i.piece;
let u = 0, p = 0, g = 0;
for (let b = 0, _ = t.length; b < _; b++) {
const O = t[b].from, N = t[b].to, S = t[b].piece;
l === S && s !