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    Glimmer is a flexible, low-level rendering pipeline for building a "live" DOM from Handlebars templates that can subsequently be updated cheaply when data changes.

    It is written in TypeScript.

    The project is still going through rapid changes at the moment. For the time being, please refer the architecture overview for more information.

    Building Glimmer

    1. Ensure that Node.js is installed.
    2. Run npm install to ensure the required dependencies are installed.
    3. Run npm run-script build to build Glimmer. The builds will be placed in the dist/ directory.

    How to Run Tests

    Via Ember CLI

    1. Run: ember test --server

    Ember CLI is a CI tool, so it will run tests as you change files.

    On the console with PhantomJS

    1. Run npm test.

    In a browser

    1. Run npm start.
    2. Visit http://localhost:7357/tests/.

    TypeScript Notes

    "Friend" Properties and Methods

    In TypeScript, private and protected refer to the class itself (and its subclasses).

    Sometimes, you want to add a property or method that shouldn't be considered part of the external API (for other packages or Ember) but is expected to be used as part of an internal protocol.

    In that case, it's ok to mark the property as private or protected and use ['property'] syntax to access the property inside of the same package.

    class Layout {
      private template: Template;
    function compile(layout: Layout, environment: Environment): CompiledBlock {
      return layout['template'].compile(environment);

    The idea is that the compile function might as well be a private method on the class, but because the function leaks into untyped code, we want to be more careful and avoid exporting it.

    Other use-cases might include protocols where a cluster of classes is intended to work together internally, but it's difficult to describe as a single class hierarchy.

    This is a semi-blessed workflow according to the TypeScript team, and Visual Studio Code (and tsc) correctly type check uses of indexed properties, and provide autocompletion, etc.

    You should not treat use of ['foo'] syntax as license to access private properties outside of the package.




    npm i rwjblue-glammer-engine

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