@rslike/cmp/dist/globals.mjs

JavaScript Comparison package without undefined behavior!

// src/symbols.ts
var kCompare = Symbol.for("Symbol.compare");
var kEquals = Symbol.for("Symbol.equals");
var kPartialEquals = Symbol.for("Symbol.partialEquals");

// src/primitives.ts
import { UndefinedBehaviorError } from "@rslike/std";
Number.prototype[Symbol.compare] = function(another) {
  if (typeof another === "object" && another !== null && Symbol.compare in another && typeof another[Symbol.compare] === "function") {
    const res = Reflect.apply(another[Symbol.compare], another, [
      this.valueOf()
    ]);
    if (typeof res === "number") {
      return res;
    }
    throw new UndefinedBehaviorError(
      `[Symbol.compare] should returns number type. Got "${typeof res}"`,
      { cause: { value: res, type: typeof res } }
    );
  }
  if (typeof another === "number") {
    if (!Number.isFinite(this.valueOf()) || !Number.isFinite(another)) {
      return Number.NaN;
    }
    const res = this.valueOf() - another;
    if (res > 0) {
      return 1;
    } else if (res < 0) {
      return -1;
    }
    return res;
  }
  throw new UndefinedBehaviorError(
    "[Symbol.compare] can acept numeric value or object with implementation of [Symbol.compare]",
    {
      cause: {
        value: another,
        type: typeof another
      }
    }
  );
};
Number.prototype[kPartialEquals] = function(another) {
  if (typeof another === "object" && another !== null && Symbol.partialEquals in another && typeof another[Symbol.partialEquals] === "function") {
    const res = Reflect.apply(another[Symbol.partialEquals], another, [
      this.valueOf()
    ]);
    if (typeof res === "boolean") {
      return res;
    }
    throw new UndefinedBehaviorError(
      `Symbol.partialEquals trait expected to returns boolean type. Got "${typeof res}"`,
      {
        cause: {
          value: res,
          type: typeof res
        }
      }
    );
  }
  return this.valueOf() == another;
};
Number.prototype[kEquals] = function(another) {
  if (typeof another === "object" && another !== null && Symbol.equals in another && typeof another[Symbol.equals] === "function") {
    const res = Reflect.apply(another[Symbol.equals], another, [
      this.valueOf()
    ]);
    if (typeof res === "boolean") {
      return res;
    }
    throw new UndefinedBehaviorError(
      `[Symbol.equals] trait expected to returns number type. Got "${typeof res}"`,
      {
        cause: {
          value: res,
          type: typeof res
        }
      }
    );
  }
  return this.valueOf() === another;
};
String.prototype[kCompare] = function(another, locales, options) {
  if (typeof another === "object" && another !== null && Symbol.compare in another && typeof another[Symbol.compare] === "function") {
    const res = Reflect.apply(another[Symbol.compare], another, [
      this.valueOf()
    ]);
    if (typeof res === "number") {
      return res;
    }
    throw new UndefinedBehaviorError(
      `Symbol.compare trait expected to returns number type. Got "${typeof res}"`
    );
  }
  if (typeof another === "number" || typeof another === "boolean") {
    const asStr = String(another);
    return this.toString().localeCompare(asStr, locales, options);
  }
  if (typeof another === "string") {
    return this.toString().localeCompare(another, locales, options);
  }
  throw new UndefinedBehaviorError(
    '"Symbol.compare" can acept string value or object with implementation of "Symbol.compare" trait',
    {
      cause: {
        value: another,
        type: typeof another
      }
    }
  );
};
String.prototype[kPartialEquals] = function(another) {
  if (typeof another === "object" && another !== null && Symbol.partialEquals in another && typeof another[Symbol.partialEquals] === "function") {
    const res = Reflect.apply(another[Symbol.partialEquals], another, [
      this.valueOf()
    ]);
    if (typeof res === "boolean") {
      return res;
    }
    throw new UndefinedBehaviorError(
      `Symbol.partialEquals trait expected to returns number type. Got "${typeof res}"`
    );
  }
  return this.valueOf() == another;
};
String.prototype[kEquals] = function(another) {
  if (typeof another === "object" && another !== null && Symbol.equals in another && typeof another[Symbol.equals] === "function") {
    const res = Reflect.apply(another[Symbol.equals], another, [
      this.valueOf()
    ]);
    if (typeof res === "boolean") {
      return res;
    }
    throw new UndefinedBehaviorError(
      `Symbol.equals trait expected to returns number type. Got "${typeof res}"`
    );
  }
  return this.valueOf() === another;
};
Boolean.prototype[kCompare] = function(another) {
  if (typeof another === "boolean") {
    if (this.valueOf() > another) {
      return 1;
    } else if (this.valueOf() < another) {
      return -1;
    }
    return 0;
  } else if (typeof another === "number") {
    return another[Symbol.compare](Number(this.valueOf()));
  } else if (typeof another === "string") {
    return this[Symbol.compare](!!another);
  }
  if (typeof another === "object" && another !== null && typeof another[Symbol.compare] === "function") {
    const res = Reflect.apply(another[Symbol.compare], another, [
      this.valueOf()
    ]);
    if (typeof res === "number") {
      return res;
    }
    throw new UndefinedBehaviorError(
      `Symbol.compare trait expected to returns number type. Got "${typeof res}"`
    );
  }
  throw new UndefinedBehaviorError(
    '"Symbol.compare" can acept only another string value or object with implementation of "Symbol.compare"',
    {
      cause: {
        value: another,
        type: typeof another
      }
    }
  );
};
Boolean.prototype[kEquals] = function(another) {
  if (typeof another === "object" && another !== null && typeof another[Symbol.equals] === "function") {
    if (typeof another === "object" && another !== null && Symbol.equals in another && typeof another[Symbol.equals] === "function") {
      const res = Reflect.apply(another[Symbol.equals], another, [
        this.valueOf()
      ]);
      if (typeof res === "boolean") {
        return res;
      }
      throw new UndefinedBehaviorError(
        `"Symbol.equals" trait expected to returns boolean type. Got "${typeof res}"`
      );
    }
  }
  return this.valueOf() === another;
};
Boolean.prototype[kPartialEquals] = function(another) {
  if (typeof another === "object" && another !== null && Symbol.partialEquals in another && typeof another[Symbol.partialEquals] === "function") {
    const res = Reflect.apply(another[Symbol.partialEquals], another, [
      this.valueOf()
    ]);
    if (typeof res === "boolean") {
      return res;
    }
    throw new UndefinedBehaviorError(
      `Symbol.partialEquals trait expected to returns boolean type. Got "${typeof res}"`
    );
  }
  if (typeof another === "boolean" || typeof another === "string" || typeof another === "number") {
    return this.valueOf() == another;
  }
  return false;
};
Date.prototype[kCompare] = function(another) {
  if (typeof another === "number" || typeof another === "string" || another instanceof Date) {
    const asDate = new Date(another);
    if (!Number.isFinite(asDate.valueOf())) {
      throw new UndefinedBehaviorError(
        "Incoming primitive is not finite after parsing to Date.",
        {
          cause: {
            value: another,
            type: typeof another
          }
        }
      );
    }
    if (this.valueOf() > asDate.valueOf()) {
      return 1;
    } else if (this.valueOf() < asDate.valueOf()) {
      return -1;
    } else {
      return 0;
    }
  }
  if (typeof another === "object" && another !== null && typeof another[Symbol.compare] === "function") {
    const res = Reflect.apply(another[Symbol.compare], another, [
      this.valueOf()
    ]);
    if (typeof res === "number") {
      return res;
    }
    throw new UndefinedBehaviorError(
      `Symbol.equals trait expected to returns boolean type. Got "${typeof res}"`
    );
  }
  throw new UndefinedBehaviorError(
    '"Symbol.compare" can acept only string, number, Date value or object with implementation of "Symbol.compare"',
    {
      cause: {
        value: another,
        type: typeof another
      }
    }
  );
};
Date.prototype[kEquals] = function(another) {
  if (typeof another === "string" || typeof another === "number" || another instanceof Date) {
    const asDate = new Date(another);
    return this.valueOf()[Symbol.equals](asDate.valueOf());
  }
  if (typeof another === "object" && another !== null && typeof another[Symbol.equals] === "function") {
    const res = Reflect.apply(another[Symbol.equals], another, [
      this.valueOf()
    ]);
    if (typeof res === "boolean") {
      return res;
    }
    throw new UndefinedBehaviorError(
      `Symbol.equals trait expected to returns boolean type. Got "${typeof res}"`
    );
  }
  return this.valueOf() === another;
};
Date.prototype[kPartialEquals] = function(another) {
  if (typeof another === "string" || typeof another === "number" || another instanceof Date) {
    const asDate = new Date(another);
    return this.valueOf()[Symbol.partialEquals](asDate.valueOf());
  }
  if (typeof another === "object" && another !== null && Symbol.partialEquals in another && typeof another[Symbol.partialEquals] === "function") {
    const res = Reflect.apply(another[Symbol.partialEquals], another, [
      this.valueOf()
    ]);
    if (typeof res === "boolean") {
      return res;
    }
    throw new UndefinedBehaviorError(
      `"Symbol.partialEquals" trait expected to returns boolean type. Got "${typeof res}"`
    );
  }
  return this.valueOf() == another;
};

// src/globals.ts
Symbol.compare = kCompare;
Symbol.partialEquals = kPartialEquals;
Symbol.equals = kEquals;