# String _string_ primitive ## `string/coerce` Restricted string coercion. Returns string presentation for every value that follows below constraints - is implicitly coercible to string - is neither`null` nor `undefined` - its `toString` method is not `Object.prototype.toString` For all other values `null` is returned ```javascript const coerceToString = require("type/string/coerce"); coerceToString(12); // "12" coerceToString(undefined); // null ``` ## `string/ensure` If given argument is a string coercible value (via [`string/coerce`](#stringcoerce)) returns result string. Otherwise `TypeError` is thrown. ```javascript const ensureString = require("type/string/ensure"); ensureString(12); // "12" ensureString(null); // Thrown TypeError: null is not a string ```