Implement and fix Series transform and filtering methods: sort, uniqu…

src/methods/series/filtering/between.js

@@ -0,0 +1,54 @@
+/**
+ * Between method for Series
+ * Returns a new Series with values between lower and upper bounds (inclusive)
+ */
+
+/**
+ * Creates a between method for Series
+ * @returns {Function} - Function to be attached to Series prototype
+ */
+export function between() {
+  /**
+   * Returns a new Series with values between lower and upper bounds (inclusive)
+   * @param {number} lower - Lower bound
+   * @param {number} upper - Upper bound
+   * @param {Object} [options] - Options object
+   * @param {boolean} [options.inclusive=true] - Whether bounds are inclusive
+   * @returns {Series} - New Series with filtered values
+   */
+  return function(lower, upper, options = {}) {
+    const { inclusive = true } = options;
+
+    if (lower === undefined || upper === undefined) {
+      throw new Error('Both lower and upper bounds must be provided');
+    }
+
+    if (lower > upper) {
+      throw new Error('Lower bound must be less than or equal to upper bound');
+    }
+
+    if (inclusive) {
+      return this.filter((x) => {
+        const numX = Number(x);
+        return !isNaN(numX) && numX >= lower && numX <= upper;
+      });
+    } else {
+      return this.filter((x) => {
+        const numX = Number(x);
+        return !isNaN(numX) && numX > lower && numX < upper;
+      });
+    }
+  };
+}
+
+/**
+ * Registers the between method on Series prototype
+ * @param {Class} Series - Series class to extend
+ */
+export function register(Series) {
+  if (!Series.prototype.between) {
+    Series.prototype.between = between();
+  }
+}
+
+export default between;

src/methods/series/filtering/contains.js

@@ -0,0 +1,51 @@
+/**
+ * Contains method for Series
+ * Returns a new Series with string values that contain the specified substring
+ */
+
+/**
+ * Creates a contains method for Series
+ * @returns {Function} - Function to be attached to Series prototype
+ */
+export function contains() {
+  /**
+   * Returns a new Series with string values that contain the specified substring
+   * @param {string} substring - Substring to search for
+   * @param {Object} [options] - Options object
+   * @param {boolean} [options.caseSensitive=true] - Whether the search is case sensitive
+   * @returns {Series} - New Series with filtered values
+   */
+  return function(substring, options = {}) {
+    const { caseSensitive = true } = options;
+
+    if (substring === undefined || substring === null) {
+      throw new Error('Substring must be provided');
+    }
+
+    return this.filter((value) => {
+      if (value === null || value === undefined) {
+        return false;
+      }
+
+      const strValue = String(value);
+
+      if (caseSensitive) {
+        return strValue.includes(substring);
+      } else {
+        return strValue.toLowerCase().includes(substring.toLowerCase());
+      }
+    });
+  };
+}
+
+/**
+ * Registers the contains method on Series prototype
+ * @param {Class} Series - Series class to extend
+ */
+export function register(Series) {
+  if (!Series.prototype.contains) {
+    Series.prototype.contains = contains();
+  }
+}
+
+export default contains;

src/methods/series/filtering/endsWith.js

@@ -0,0 +1,52 @@
+/**
+ * EndsWith method for Series
+ * Returns a new Series with string values that end with the specified suffix
+ */
+
+/**
+ * Creates an endsWith method for Series
+ * @returns {Function} - Function to be attached to Series prototype
+ */
+export function endsWith() {
+  /**
+   * Returns a new Series with string values that end with the specified suffix
+   * @param {string} suffix - Suffix to search for
+   * @param {Object} [options] - Options object
+   * @param {boolean} [options.caseSensitive=true] - Whether the search is case sensitive
+   * @returns {Series} - New Series with filtered values
+   */
+  return function(suffix, options = {}) {
+    const { caseSensitive = true } = options;
+
+    if (suffix === undefined || suffix === null) {
+      throw new Error('Suffix must be provided');
+    }
+
+    return this.filter((value) => {
+      if (value === null || value === undefined) {
+        return false;
+      }
+
+      const strValue = String(value);
+
+      if (caseSensitive) {
+        // В режиме чувствительности к регистру проверяем точное совпадение
+        return strValue.endsWith(suffix);
+      } else {
+        return strValue.toLowerCase().endsWith(suffix.toLowerCase());
+      }
+    });
+  };
+}
+
+/**
+ * Registers the endsWith method on Series prototype
+ * @param {Class} Series - Series class to extend
+ */
+export function register(Series) {
+  if (!Series.prototype.endsWith) {
+    Series.prototype.endsWith = endsWith();
+  }
+}
+
+export default endsWith;

src/methods/series/filtering/filter.js

@@ -5,20 +5,22 @@
  * @param {Function} predicate - Function that takes a value and returns true/false
  * @returns {Series} - New Series with filtered values
  */
-export const filter = (series, predicate) => {
+export function filter(series, predicate) {
   const values = series.toArray();
   const filteredValues = values.filter(predicate);
   return new series.constructor(filteredValues);
-};
+}
 
 /**
  * Registers the filter method on Series prototype
  * @param {Class} Series - Series class to extend
  */
-export const register = (Series) => {
-  Series.prototype.filter = function(predicate) {
-    return filter(this, predicate);
-  };
-};
+export function register(Series) {
+  if (!Series.prototype.filter) {
+    Series.prototype.filter = function(predicate) {
+      return filter(this, predicate);
+    };
+  }
+}
 
 export default { filter, register };

src/methods/series/filtering/isNull.js

@@ -0,0 +1,30 @@
+/**
+ * IsNull method for Series
+ * Returns a new Series with only null or undefined values
+ */
+
+/**
+ * Creates an isNull method for Series
+ * @returns {Function} - Function to be attached to Series prototype
+ */
+export function isNull() {
+  /**
+   * Returns a new Series with only null or undefined values
+   * @returns {Series} - New Series with filtered values
+   */
+  return function() {
+    return this.filter((x) => x === null || x === undefined);
+  };
+}
+
+/**
+ * Registers the isNull method on Series prototype
+ * @param {Class} Series - Series class to extend
+ */
+export function register(Series) {
+  if (!Series.prototype.isNull) {
+    Series.prototype.isNull = isNull();
+  }
+}
+
+export default isNull;

src/methods/series/filtering/matches.js

@@ -0,0 +1,51 @@
+/**
+ * Matches method for Series
+ * Returns a new Series with string values that match the specified regular expression
+ */
+
+/**
+ * Creates a matches method for Series
+ * @returns {Function} - Function to be attached to Series prototype
+ */
+export function matches() {
+  /**
+   * Returns a new Series with string values that match the specified regular expression
+   * @param {RegExp|string} pattern - Regular expression pattern to match
+   * @param {Object} [options] - Options object
+   * @param {boolean} [options.flags] - Flags for the RegExp if pattern is a string
+   * @returns {Series} - New Series with filtered values
+   */
+  return function(pattern, options = {}) {
+    const { flags = '' } = options;
+
+    if (pattern === undefined || pattern === null) {
+      throw new Error('Regular expression pattern must be provided');
+    }
+
+    // Convert string pattern to RegExp if needed
+    const regex = pattern instanceof RegExp 
+      ? pattern 
+      : new RegExp(pattern, flags);
+
+    return this.filter((value) => {
+      if (value === null || value === undefined) {
+        return false;
+      }
+
+      const strValue = String(value);
+      return regex.test(strValue);
+    });
+  };
+}
+
+/**
+ * Registers the matches method on Series prototype
+ * @param {Class} Series - Series class to extend
+ */
+export function register(Series) {
+  if (!Series.prototype.matches) {
+    Series.prototype.matches = matches();
+  }
+}
+
+export default matches;