feat:node-modules

node_modules/mathjs/lib/esm/expression/Help.js

@@ -0,0 +1,132 @@
+import { isHelp } from '../utils/is.js';
+import { clone } from '../utils/object.js';
+import { format } from '../utils/string.js';
+import { factory } from '../utils/factory.js';
+var name = 'Help';
+var dependencies = ['evaluate'];
+export var createHelpClass = /* #__PURE__ */factory(name, dependencies, _ref => {
+  var {
+    evaluate
+  } = _ref;
+  /**
+   * Documentation object
+   * @param {Object} doc  Object containing properties:
+   *                      {string} name
+   *                      {string} category
+   *                      {string} description
+   *                      {string[]} syntax
+   *                      {string[]} examples
+   *                      {string[]} seealso
+   * @constructor
+   */
+  function Help(doc) {
+    if (!(this instanceof Help)) {
+      throw new SyntaxError('Constructor must be called with the new operator');
+    }
+    if (!doc) throw new Error('Argument "doc" missing');
+    this.doc = doc;
+  }
+
+  /**
+   * Attach type information
+   */
+  Help.prototype.type = 'Help';
+  Help.prototype.isHelp = true;
+
+  /**
+   * Generate a string representation of the Help object
+   * @return {string} Returns a string
+   * @private
+   */
+  Help.prototype.toString = function () {
+    var doc = this.doc || {};
+    var desc = '\n';
+    if (doc.name) {
+      desc += 'Name: ' + doc.name + '\n\n';
+    }
+    if (doc.category) {
+      desc += 'Category: ' + doc.category + '\n\n';
+    }
+    if (doc.description) {
+      desc += 'Description:\n    ' + doc.description + '\n\n';
+    }
+    if (doc.syntax) {
+      desc += 'Syntax:\n    ' + doc.syntax.join('\n    ') + '\n\n';
+    }
+    if (doc.examples) {
+      desc += 'Examples:\n';
+
+      // after evaluating the examples, we restore config in case the examples
+      // did change the config.
+      var configChanged = false;
+      var originalConfig = evaluate('config()');
+      var scope = {
+        config: newConfig => {
+          configChanged = true;
+          return evaluate('config(newConfig)', {
+            newConfig
+          });
+        }
+      };
+      for (var i = 0; i < doc.examples.length; i++) {
+        var expr = doc.examples[i];
+        desc += '    ' + expr + '\n';
+        var res = void 0;
+        try {
+          // note: res can be undefined when `expr` is an empty string
+          res = evaluate(expr, scope);
+        } catch (e) {
+          res = e;
+        }
+        if (res !== undefined && !isHelp(res)) {
+          desc += '        ' + format(res, {
+            precision: 14
+          }) + '\n';
+        }
+      }
+      desc += '\n';
+      if (configChanged) {
+        evaluate('config(originalConfig)', {
+          originalConfig
+        });
+      }
+    }
+    if (doc.mayThrow && doc.mayThrow.length) {
+      desc += 'Throws: ' + doc.mayThrow.join(', ') + '\n\n';
+    }
+    if (doc.seealso && doc.seealso.length) {
+      desc += 'See also: ' + doc.seealso.join(', ') + '\n';
+    }
+    return desc;
+  };
+
+  /**
+   * Export the help object to JSON
+   */
+  Help.prototype.toJSON = function () {
+    var obj = clone(this.doc);
+    obj.mathjs = 'Help';
+    return obj;
+  };
+
+  /**
+   * Instantiate a Help object from a JSON object
+   * @param {Object} json
+   * @returns {Help} Returns a new Help object
+   */
+  Help.fromJSON = function (json) {
+    var doc = {};
+    Object.keys(json).filter(prop => prop !== 'mathjs').forEach(prop => {
+      doc[prop] = json[prop];
+    });
+    return new Help(doc);
+  };
+
+  /**
+   * Returns a string representation of the Help object
+   */
+  Help.prototype.valueOf = Help.prototype.toString;
+  return Help;
+}, {
+  isClass: true
+});