diff options
| author | Johannes <mail@johannesewald.de> | 2012-06-12 01:29:10 +0400 |
|---|---|---|
| committer | Johannes <mail@johannesewald.de> | 2012-06-12 01:29:10 +0400 |
| commit | 0af1dcb6b2ccbc7ec0ae757549688e666cf569a7 (patch) | |
| tree | 4b3854b937ff1f05bf8677c8fc1547fa733e6feb /lib/__set__.js | |
| parent | 75f6a7765a09344dab54a4a2ca99ac12f547a75d (diff) | |
- changed APIv0.2.0
- introduced __set__ and __get__ to rewired modules
Diffstat (limited to 'lib/__set__.js')
| -rw-r--r-- | lib/__set__.js | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/lib/__set__.js b/lib/__set__.js new file mode 100644 index 0000000..7de8eec --- /dev/null +++ b/lib/__set__.js @@ -0,0 +1,41 @@ +"use strict"; // run code in ES5 strict mode
+
+/**
+ * This function will be stringified and then injected into every rewired module.
+ * Then you can set private variables by calling myModule.__set__("myPrivateVar", newValue);
+ *
+ * @param {!String|!Object} varName name of the variable to set
+ * @param {String} varValue new value
+ * @throws {TypeError}
+ * @return {*}
+ */
+module.exports = function __set__(varName, varValue) {
+ var key,
+ env,
+ src = "";
+
+ function checkExistsSrc(varName) {
+ return "if (typeof " + varName + " === 'undefined') { throw new ReferenceError('" + varName + " is not defined');} ";
+ }
+
+ if (typeof varName === "object") {
+ env = varName;
+ if (!env || Array.isArray(env)) {
+ throw new TypeError("__set__ expects an object as env");
+ }
+ for (key in env) {
+ if (env.hasOwnProperty(key)) {
+ src += checkExistsSrc(key) + key + " = env." + key + ";";
+ }
+ }
+ } else if (typeof varName === "string") {
+ if (!varName) {
+ throw new TypeError("__set__ expects a non-empty string as a variable name");
+ }
+ src = checkExistsSrc(varName) + varName + " = varValue;"
+ } else {
+ throw new TypeError("__set__ expects an environment object or a non-empty string as a variable name");
+ }
+
+ eval(src);
+};
\ No newline at end of file |