feat:node-modules

node_modules/mathjs/lib/esm/function/algebra/leafCount.js

@@ -0,0 +1,54 @@
+import { factory } from '../../utils/factory.js';
+var name = 'leafCount';
+var dependencies = ['parse', 'typed'];
+export var createLeafCount = /* #__PURE__ */factory(name, dependencies, _ref => {
+  var {
+    parse,
+    typed
+  } = _ref;
+  // This does the real work, but we don't have to recurse through
+  // a typed call if we separate it out
+  function countLeaves(node) {
+    var count = 0;
+    node.forEach(n => {
+      count += countLeaves(n);
+    });
+    return count || 1;
+  }
+
+  /**
+   * Gives the number of "leaf nodes" in the parse tree of the given expression
+   * A leaf node is one that has no subexpressions, essentially either a
+   * symbol or a constant. Note that `5!` has just one leaf, the '5'; the
+   * unary factorial operator does not add a leaf. On the other hand,
+   * function symbols do add leaves, so `sin(x)/cos(x)` has four leaves.
+   *
+   * The `simplify()` function should generally not increase the `leafCount()`
+   * of an expression, although currently there is no guarantee that it never
+   * does so. In many cases, `simplify()` reduces the leaf count.
+   *
+   * Syntax:
+   *
+   *     math.leafCount(expr)
+   *
+   * Examples:
+   *
+   *     math.leafCount('x') // 1
+   *     math.leafCount(math.parse('a*d-b*c')) // 4
+   *     math.leafCount('[a,b;c,d][0,1]') // 6
+   *
+   * See also:
+   *
+   *     simplify
+   *
+   * @param {Node|string} expr    The expression to count the leaves of
+   *
+   * @return {number}  The number of leaves of `expr`
+   *
+   */
+  return typed(name, {
+    Node: function Node(expr) {
+      return countLeaves(expr);
+    }
+  });
+});