feat:node-modules

node_modules/mathjs/lib/esm/function/set/setUnion.js

@@ -0,0 +1,49 @@
+import { flatten } from '../../utils/array.js';
+import { factory } from '../../utils/factory.js';
+var name = 'setUnion';
+var dependencies = ['typed', 'size', 'concat', 'subset', 'setIntersect', 'setSymDifference', 'Index'];
+export var createSetUnion = /* #__PURE__ */factory(name, dependencies, _ref => {
+  var {
+    typed,
+    size,
+    concat,
+    subset,
+    setIntersect,
+    setSymDifference,
+    Index
+  } = _ref;
+  /**
+   * Create the union of two (multi)sets.
+   * Multi-dimension arrays will be converted to single-dimension arrays before the operation.
+   *
+   * Syntax:
+   *
+   *    math.setUnion(set1, set2)
+   *
+   * Examples:
+   *
+   *    math.setUnion([1, 2, 3, 4], [3, 4, 5, 6])            // returns [1, 2, 3, 4, 5, 6]
+   *    math.setUnion([[1, 2], [3, 4]], [[3, 4], [5, 6]])    // returns [1, 2, 3, 4, 5, 6]
+   *
+   * See also:
+   *
+   *    setIntersect, setDifference
+   *
+   * @param {Array | Matrix}    a1  A (multi)set
+   * @param {Array | Matrix}    a2  A (multi)set
+   * @return {Array | Matrix}    The union of two (multi)sets
+   */
+  return typed(name, {
+    'Array | Matrix, Array | Matrix': function Array__Matrix_Array__Matrix(a1, a2) {
+      if (subset(size(a1), new Index(0)) === 0) {
+        // if any of them is empty, return the other one
+        return flatten(a2);
+      } else if (subset(size(a2), new Index(0)) === 0) {
+        return flatten(a1);
+      }
+      var b1 = flatten(a1);
+      var b2 = flatten(a2);
+      return concat(setSymDifference(b1, b2), setIntersect(b1, b2));
+    }
+  });
+});