KeyPath

Helper library to get/set keypaths on any object.

Documentation

KeyPath is defined as a requirejs module.

It can be imported as a npm package to be used in Node.js applications:

$ npm i gkeypath

API

• KeyPath.get: Get a value in target at given keypath
• KeyPath.set: Set a value in target at given keypath
• KeyPath.del: Delete a value in target at given keypath
• KeyPath.has: Check if target has a property at given keypath.
• KeyPath.oneOf: Get a value in target at array of keypaths
• KeyPath.ifNotSet: If no property at keypath then set. Return value at keypath
• KeyPath.assert: If target does not have keypath call onError
• KeyPath.onError: Developer should override with custom assertion handler.

Examples

let foo = { bar: { baz: 'fiz',  buzs: ['fizbuz']} };

console.log(KeyPath.get(foo, 'bar.baz')); //fiz
console.log(foo.path.get('bar.bar')); //undefined
console.log(foo.path.get('bar.baz.buzs[0]')); //fizbuz
console.log(foo.path.get('bar.bar', 'fuz')); //fuz

Wrapping

You can wrap your object to get a get and set functions to access values.

The wrap function has different signatures.

let foo = { bar: { baz: 'fiz',  buzs: ['fizbuz']} };

KeyPath.wrap(foo, '$path');

console.log(foo.$path.get('bar.baz')); //fiz
console.log(foo.$path.get('bar.bar')); //undefined
console.log(foo.$path.get('bar.baz.buzs[0]')); //fizbuz
console.log(foo.$path.get('bar.bar', 'fuz')); //fuz

let foo = { bar: { baz: 'fiz' } };

KeyPath.wrap(foo, (target, wrapper) => {
    ...
});

Proxy

The wrapped object will be wrapped in an ES6 Proxy object, in which case you can access properties using dot notation instead of having to use the get/set functions.

let config = { bar: { baz: 'fiz' } };

config = KeyPath.wrap(config);

console.log(config.bar.baz) //fiz

Getting Started

Download the production version or the development version.

Development

npm install && bower install

If you need to sudo the npm command, you can try to:

sudo chown $(whoami) ~/.npm
sudo chown $(whoami) /usr/local/share/npm/bin
sudo chown -R $(whoami) /usr/local/lib/node_modules

If you bump versions, remember to update:

• package.json
• bower.json
• component.json
• etc.

Bower

Bower is a package manager for the web. It offers a generic, unopinionated solution to the problem of front-end package management, while exposing the package dependency model via an API that can be consumed by a more opinionated build stack. There are no system wide dependencies, no dependencies are shared between different apps, and the dependency tree is flat.

To register gkeypath in the bower registry: bower register gkeypath git://github.com/goliatone/gkeypath.git

Then, make sure to tag your module:

git tag -a v0.1.0 -m "Initial release."

And push it:

git push --tags

Travis

In order to enable Travis for this specific project, you need to do so on your Travi's profile. Look for the entry goliatone/gkeypath, activate, and sync.

Release History

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