latte v0.4.1
latte-js
JavaScript, with a little milk & sugar
Latte is an extension of JavaScript, bringing features of CoffeeScript in a familiar JS syntax.
If you like CoffeeScript, but not the Rubyish syntax, Latte is for you.
Get Started
Install
npm install -g latte
or
npm install --save-dev latte
Usage
$ latte --help
Latte.js compiler.
Usage: latte [options] [--] files...
Options:
-c, --compile Compile input files. If not specified, evaluates the files.
-o, --output Output directory, to be used with --compile.
--version Show version
Try the REPL
$ latte
> [1,2,3].map(x => x * x)
[ 1, 4, 9 ]
Compile a directory of .latte files
latte -o lib/ -c src/
Generate (inline) source maps too
latte -o lib/ -c src/ -m
The Language
See the proper documentation at http://lattejs.com
ES6 Features
- Arrow functions
- Generators
- Iterators
- Destructuring assignment
- Template strings
- Block-scoped variables ('let' statement)
- For-of statement
- Rest params
- Array spreads
Latte JS Features
- Monad syntax (similar to Haskell) for flattening async control flow
- Array comprehensions
- Declare variables in array comprehensions (more functional programming goodness)
- Filter with 'if' in for-of/for-in statements
Changes
0.4.1
- Registered .latte extension with Node.js, so .latte modules can be required (#15)
- Removed git:// dependencies
0.4.0
- Changed iterators & generators to reflect latest ES6 spec (no more StopIteration).
- Added benchmarks (just for generators, initially).
- Optimised generators for tail call emulation use case - performance is comparable to trampoline.
- Monads now implemented via generators - reusing control flow logic, and to allow use of native generators implementation where available (this will be a command line flag later on).
- Monads now properly support return statement (fixes #9).
- Added support for array spreads (via https://github.com/square/es6-spread).
- Added support for rest params (via https://github.com/thomasboyt/es6-rest-params).
- Added support for generating source maps (via https://github.com/benjamn/recast).
0.3.5
- Allow monad binds in for loops.
- Allow monad binds in test/update expressions in all supported control structures.
0.3.4
- Fixed break and continue in monad blocks.
- Fixed issue with monadic binds in a multiple-var-decl statement resulting in undefined references.
0.3.3
Fixed issue with using functions as part of a monad bind.
0.3.2
Various fixes.
0.3.1
- Support for monads.
- Initial support for ES6 generators.
- For-of statement.
0.2.7
Array comprehension improvement
0.2.6
Clear module cache when evaluating script in-process
0.2.5
- Array comprehension with variables
- Set __dirname properly when evaluating script in-process
0.2.4
- Array comprehensions
- Command line improvements
- For-in-if statement:
for (x in y if (x.is('awesome')))
0.2.3
- Array destructuring
- Let statement
- Support for more AST nodes (stops the noisy output)
0.2.2
Basic quasi-literals support
0.2.1
Node 0.8 compatibility
0.2.0
Grunt task
0.1.0
Unix fixes
0.0.2
Initial release, arrow functions
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