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https://github.com/satyr/coco
Unfancy CoffeeScript
https://github.com/satyr/coco
Last synced: 4 days ago
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Unfancy CoffeeScript
- Host: GitHub
- URL: https://github.com/satyr/coco
- Owner: satyr
- License: mit
- Created: 2010-11-04T03:32:34.000Z (about 14 years ago)
- Default Branch: master
- Last Pushed: 2019-10-25T11:57:24.000Z (about 5 years ago)
- Last Synced: 2024-12-01T05:04:54.187Z (11 days ago)
- Language: JavaScript
- Homepage: http://satyr.github.com/coco/
- Size: 11.3 MB
- Stars: 497
- Watchers: 25
- Forks: 48
- Open Issues: 39
-
Metadata Files:
- Readme: README.md
- License: LICENSE
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README
# Coco
is a [CoffeeScript](http://coffeescript.org) dialect
that aims to be more radical and practical.
## Why
On its way to hide JavaScript's bad parts, CoffeeScript has accumulated own quirks:
[horrible variable scope](https://github.com/jashkenas/coffee-script/issues/712),
[awkward ranges](https://github.com/jashkenas/coffee-script/issues/746),
[confusing](https://github.com/jashkenas/coffee-script/issues/702)
[and/or](https://github.com/jashkenas/coffee-script/issues/785)
[pointless](https://github.com/jashkenas/coffee-script/issues/813)
keywords, verbose file extension,
[and so on](https://github.com/satyr/coco/wiki/wtfcs).
Coco tries to amend them, entwining good parts of both.
## Principles
- Respect JS semantics and idioms.
- Die for [DRY](http://en.wikipedia.org/wiki/Don%27t_repeat_yourself).
- Perl over Ruby.
- Fewer keywords, punctuations and runtime errors.
## Differences
- [Improvements](https://github.com/satyr/coco/wiki/improvements)
- [Incompatibilities](https://github.com/satyr/coco/wiki/incompatibilities)
- [Side by Side Comparison](https://github.com/satyr/coco/wiki/side-by-side-comparison)
## Documents
- [Additions](https://github.com/satyr/coco/wiki/additions)
- [Glossary](https://github.com/satyr/coco/wiki/glossary)
- [Annotated Source](http://satyr.github.io/coco/src/)
## Installation
Get [Node.js](http://nodejs.org) and [npm](http://npmjs.org), then:
- `npm i -g coco`
- `git clone git://github.com/satyr/coco.git && cd coco && bin/coke i`
## Changelog
### 0.9.1
- Added `if`-block. ([#151](https://github.com/satyr/coco/issues/151))
- Added `for`-`let`. ([#164](https://github.com/satyr/coco/issues/164))
- Added `<>` aka _lef_. ([#180](https://github.com/satyr/coco/issues/180))
- Gave `|>` the lowest precedence.
- Made block constructions directly dot-accessible.
- Made JS literal Markdown-esque. To include N `` ` ``, close with N+1 `` ` ``:
```` ``` '``' ``` ````
- Quit reusing temporary variables.
- File extensions like _co.json_, _coon_, or _cocoon_ now imply `--json`.
- Fixed:
- [#193](https://github.com/satyr/coco/issues/193)
- [#195](https://github.com/satyr/coco/issues/195)
- [#199](https://github.com/satyr/coco/issues/199)
- [#200](https://github.com/satyr/coco/issues/200)
- [gkz/LiveScript#273](https://github.com/gkz/LiveScript/issues/273)
- [gkz/LiveScript#279](https://github.com/gkz/LiveScript/issues/279)
### 0.9.0
- Literal `&` is now used to reference several new targets:
- Left hand of `|>` (in place of `_`).
- Current item of newly added quick map: `for [0 1] => &+2 # [2 3]`
- Subject of new `with` as proposed
in [#172](https://github.com/satyr/coco/issues/172).
- Made cascade, now `with` in disguise, require at least one `&` in body.
([#179](https://github.com/satyr/coco/issues/179))
- Made `let` accept `this =` on the first assignment to substitute old `with`.
- Made bodyless `catch` return the catchee.
- Made `by -1` implied on downward ranges.
- Made interpolation apply to `#&` and `#@`.
- Quit expanding `super` followed by `::` to parent method,
so that call to `super::anotherMethod` works as expected.
- Fixed:
- [#175](https://github.com/satyr/coco/issues/175)
- [#178](https://github.com/satyr/coco/issues/178)
- [#185](https://github.com/satyr/coco/issues/185)
- [#190](https://github.com/satyr/coco/issues/190)
- [#192](https://github.com/satyr/coco/issues/192)
- [coffee#1188](https://github.com/jashkenas/coffee-script/issues/1188)
### 0.8.2
- Fixed:
- [#165](https://github.com/satyr/coco/issues/165)
- [#168](https://github.com/satyr/coco/issues/168)
- [coffee#2496](https://github.com/jashkenas/coffee-script/issues/2496)
- [coffee#2506](https://github.com/jashkenas/coffee-script/issues/2506)
### 0.8.1
- Fixed [#162](https://github.com/satyr/coco/issues/162).
### 0.8.0
- Allowed hyphenated alphabets within identifiers as alias to their upper case:
`encode-URI-component` => `encodeURIComponent`
- Added cascade. ([#72](https://github.com/satyr/coco/issues/72)
- Changed the pipe operator to `|>`.
- Revised `=>` as another block creation operator.
- `export`/`import`/`const`/`var` can now appear anywhere.
- `catch`ed variables are now function-scoped.
([coffee#2422](https://github.com/jashkenas/coffee-script/issues/2422))
- Generated variables now get postfix `$` rather than prefix `__`.
### 0.7.6
- Added `export const`.
- Enabled object splat within brace objects via `...:`.
- Allowed array repetition to work on slices and comprehensions.
- Disallowed malformed hex/unicode escape sequence in string.
- Quit overloading `+` for array concatenation.
- `class` can be bodyless again.
- `super` no longer auto-`.call`s more than once.
### 0.7.5
- Implemented `implements`. ([#144](https://github.com/satyr/coco/issues/144))
- Top-level `void`s are now simply ignored and usable like Python's __pass__.
### 0.7.4
- Added `import` declaration in place of the implicit `this import`:
`import a, b` => `this <<< a <<< b`
- Made `super` work in accessor methods.
- Disallowed redeclarations via `var`.
- Improved handling of nonexistent files.
### 0.7.3
- Node.js 0.8.x.
- Added `const` and `var`. ([#139](https://github.com/satyr/coco/issues/139))
- Made `function` variables read-only.
- Removed `-n` shorthand for `--nodejs`.
([#142](https://github.com/satyr/coco/issues/142))
- Bug fixes:
- `super` with nested classes and methods
- `f a, while b then c` etc.
- and others:
[#138](https://github.com/satyr/coco/issues/138)
[#141](https://github.com/satyr/coco/issues/141)
[#143](https://github.com/satyr/coco/issues/143)
### 0.7.2
- Revised accessor. ([#5](https://github.com/satyr/coco/issues/5))
- Allowed implicit array after some unary operators.
- Added named backcall: `<-:f g` => `g(:f ->)`
- Made `{[q]:p}` short for `{p: [q]:p}`.
### 0.7.1
- Added `export` statement. ([#121](https://github.com/satyr/coco/issues/121))
- Made `{{q}:p}` short for `{p: {q}:p}`.
- Allowed keyword literals as object shorthand: `{true}` => `{true: true}`
- Allowed decimals and `$` in number comments.
- Removed uppercase radix prefixes and exponential notation as per
[coffee#2061](https://github.com/jashkenas/coffee-script/issues/2061).
- Labelling a function (literal or IIFE sugar) now names it.
E.g. `:f ->` compiles to `(function f(){})`.
- `super` call to a bound class now works as expected.
- All compiler-generated variables are now double-underscore prefixed.
- `--interactive` no longer implies `--bare`.
Use `-bi` when you want top-level variables to persist.
### 0.7.0
- Caught up Node.js 0.6.x.
- `!` against function/backcall now suppresses its auto-return.
- `superclass` now points to the constructor that the `class extends`.
- `super` now relies solely on `superclass` rather than requiring special forms like `C::m = ->`.
- `of` no longer delegates to `Array::indexOf`, making it consistent with `for`-`of` behavior.
- Inline implicit objects now close at newline or `if`/`for`/`while`/`until`.
- `--print` no longer implies `--compile`.
- `--watch` now works on Windows.
### 0.6.7
- Fixed [coffee#1715](https://github.com/jashkenas/coffee-script/issues/1715) etc.
- Trivial improvements.
### 0.6.6
- Added unary assignments: `!! = x` => `x = !!x`
- Made `a? <<< b` short for `a <<< b if a?`.
- Improved stack traces from directly run .co files.
### 0.6.5
- `case`/`of`/`instanceof` now works better with array slice.
- `instanceof` now rejects invalid right operands.
### 0.6.4
- Unary operators now spread into an array operand: `+[a, b]` => `[+a, +b]`
- `..` now points to the constructor under `class`.
- _coke_ now works from subdirectories.
([coffee#1687](https://github.com/jashkenas/coffee-script/issues/1687))
### 0.6.3
- Added pipe operator: `f! => g _` => `_ = f!; g _`
- Fixed identifier lexing as per ES5.
- Improved label handlings.
- Helper functions are now declared last.
([coffee#1638](https://github.com/jashkenas/coffee-script/issues/1638))
### 0.6.2
- Added character ranges: `[\a to \d]` => `[\a \b \c \d]`
- Added named destructuring: `{p, q}:o = f!` => `o = f!; {p, q} = o`
- Numbers can no longer start with `.`.
- `function` can no longer prefix `->`/`~>`.
Use `~function` to declare bound functions instead.
### 0.6.1
- Allowed line folding after `for` prepositions.
- `import`ing onto a soaked expression is now safe.
- `--json` now modifies `--ast` or `--compile`.
- Fixed [#81](https://github.com/satyr/coco/issues/81) etc.
### 0.6.0
#### Additions
- Added [soak assign](https://github.com/satyr/coco/issues/71).
- Added [`` and `>?` operators](https://github.com/satyr/coco/issues/66).
- Loops can now have [`else` clause](https://github.com/satyr/coco/issues/75).
- `import x` is now short for `this <<< x`.
- `,` after `(`, `[` or another `,` now implies `void`.
#### Changes
- Added [object slice](https://github.com/satyr/coco/issues/77).
- Added bang call: `f!` => `f()`
- Revised clone syntax from `x{}` to `^x`.
- Revised semiautovivification syntax from `.!`/`.@` to `.@`/`.@@`.
- Variable interpolations no longer require braces:
`"(#id)"` => `"(" + id + ")"`
- Spaced dots now close implicit calls.
See [coffee#1407](https://github.com/jashkenas/coffee-script/issues/1407).
- Direct calls to `super` now delegate `this`.
- [`extended` hook](https://github.com/jashkenas/coffee-script/issues/516) is back.
- `from` of `for` is now optional, meaning `from 0`.
`til`less `from` is no longer allowed.
### 0.5.4
- `while`/`until` can now have update clause after test clause:
`continue while f(), g()` => `for (; f(); g()) {}`
- `that` no longer triggers anaphoric conversion under `unless`/`until`.
- Disallowed `a.=b = c` `p:~ (a, b) ->` `f ..., a` etc.
- Fixed [coffee#1416](https://github.com/jashkenas/coffee-script/issues/1416).
### 0.5.3
- Added `do`-`while`/`until` construction.
- Added `$` flag to regexes. Same as `.source`, but more efficient.
- Suppressed implicit return on `new`ed/setter functions.
- Sped up lexer.
### 0.5.2
- Added `!?` (inexistence) operator.
- `function` no longer requires parens around parameters.
- `class` block is now mandatory.
- Bug fixes:
[coffee#1352](https://github.com/jashkenas/coffee-script/issues/1352)
[coffee#1354](https://github.com/jashkenas/coffee-script/issues/1354)
### 0.5.1
- `a.b.c?.=d.e` now works as expected.
- `a[b, c] = d` now works as expected.
- _extras/coco.js_ works again on WSH.
- `--output` implies `--compile` again.
### 0.5.0
- Added `**` operator.
- Overloaded `+`/`-`/`/` (in addition to `*`) for arrays and strings.
- Revised `let`: `let (a) ~>` => `let a then`
- Allowed underscores within number literals.
- Major regex changes:
- Dieted heregex: `/// re ///` => `// re //`
- Allowed leading whitespace in normal regex literals when unambiguous.
- No longer accepts invalid regexes.
- `->` is now optional when `function` is used.
- `case` accepts comma-separated tests again.
- `return`/`throw` can now take a block.
- REPL now uses _^J_ to continue lines.
### 0.4.2
- Enabled:
- ADI on `?.`
- ACI on `++`/`--`
- conditional destructuring assignments
- colors and tab completion in REPL
- Made leading `*`s serve like list markers.
### 0.4.1
- Added string/array multiplication.
- Added label support.
- Aliased `constructor` as `..`.
### 0.4.0
- Added `let`. Unary `do` is back at being simple call.
- Added `with`.
- Added semiautovivification.
- Made `::` a pure sugar for `prototype`, which can now directly refer to `@::` under class body.
- `?.` can now appear anywhere a normal dot can be used.
- `~.` is changed to `. ~`.
- `new` no longer accepts splatted arguments.
- `--interactive` now works with `--compile` and `--bare`.
- Renamed `--nodes` option and `.nodes` method to `--ast`/`.ast`.
- Fixed [the performance bug](https://github.com/jashkenas/coffee-script/issues/1033) wrt long method chains.
- Quit supporting Node.js 0.3.x or lower.
### 0.3.2
- Unrestricted ADI for identifiers beyond `@` and `::`.
- Expanded property shorthands beyond `@foo`.
- Added `typeof!`, which inspects the internal _[[Class]]_ property.
- Added shebang support.
- REPL results now evaluate more intuitively.
- Disallowed whitespace mixup for indentations.
### 0.3.1
- `debugger` now works anywhere.
- Revised heregex flag syntax: `///#{x}#{y}///?` -> `RegExp('' + x, y);`
- Removed `Coco.eval`.
- Made _extras/coco.js_ work as a mini-compiler on WSH.
- Added _extras/mode-coco.js_, an editing mode for [Ace](http://ace.ajax.org).
- Added `--json` option.
### 0.3.0
#### Pure Additions
- Added _backcall_, a sugar to flatten nested callbacks.
- `do` block can now work as a pair of normal parentheses.
- Improved _ACI_ (automatic comma insertion): `f {} [] x` -> `f({}, [], x);`
- Improved _ADI_ (automatic dot insertion): `@@0'!'` -> `arguments[0]['!'];`
- Multiline block on the RHS of object property now works as an implicit array.
- Heregexes now support dynamic flags: `/// x #{? y } ///` -> `RegExp('x', y);`
- Enabled compound _accessigns_: `a.+=b` -> `a += a.b;`
- `...` in array destructuring (same as `...[]`) now skips items rather than `slice`ing them. ([coffee#870](https://github.com/jashkenas/coffee-script/issues/870))
- Compilation errors now report line numbers.
- `Coco` object now emits more events for use with `--require`.
#### Incompatible Changes
- `=>` -> `~>`
- `&.` -> `~.`
- Braceless objects no longer consume property shorthands.
([coffee#618](https://github.com/jashkenas/coffee-script/issues/618))
- Indentations within non-here strings are now stripped.
- [Fixed](https://github.com/jashkenas/coffee-script/issues/1050)
block comment syntax to good ol' `/* */`.
- `@0` is now `this[0]` rather than `arguments[0]`.
### 0.2.2
- `is not` is the new `isnt`.
- `@'++'` is now valid as a shorthand for `@['++']`.
- Commas between primitive values are now optional.
- _coke_ now automatically aliases tasks.
- _extras/coco.js_ now works as a Gecko JS Module.
- Grouped documentation suite into _doc/_ for portability.
- Rewrote _src/optparse.co_.
### 0.2.1
- Added numeric ranges.
- Destructuring assignments can now specify default values using logical operators.
Default arguments syntax has been changed accordingly.
(`(a || b) ->` instead of `(a ||= b) ->`)
- `do` now performs special conversions against function literals with parameters,
making it work as pseudo-`let` and Coffee 1.0.0 compliant.
- Allowed `for i from x then` as a sugar for `for i from 0 til x then`.
- Disallowed duplicate formal arguments.
- Improved syntax-highlight in _src/index.html_.
### 0.2.0
- Version bump for Xmas, in concert with [Coffee 1.0.0](http://news.ycombinator.com/item?id=2037801).
- `@@` is now a shorthand for `arguments`.
- `do` can now indicate a call against indented arguments.
- `and` and `or` now close implicit calls, making you write even less parens:
`f x and g y or z` -> `f(x) && g(y) || z;`
- `catch`'s variable declaration is no longer required.
- `a<[ b c ]>` is now equivalent to `a[\b, \c]` (was `a(\b, \c)`).
- `case` now requires brackets to have multiple conditions.
- Added `--nodejs` option. See [coffee#910](https://github.com/jashkenas/coffee-script/issues/910).
- Renamed `--stdio` to `--stdin`.
### 0.1.6
- Added character/word literal:
`\C + \++` -> `'C' + '++';`
- Retrieving multiple properties at once is now possible:
`a[b, c]` -> `[a[b], a[c]];`
- Destructuring into an object's properties is now possible:
- `a[b, c] = d` -> `a[b] = d[0], a[c] = d[1];`
- `a{b, c} = d` -> `a.b = d.b, a.c = d.c;`
- Compound assignments can now destructure:
`[@a, @b] /= c` -> `this.a /= c[0], this.b /= c[1];`
### 0.1.5
- Conditional control structures can now be anaphoric;
`that` within `if`, `while` or `case` block now refers to the condition value.
- Decimal numbers can now have arbitrary trailing alphabets as comments.
e.g. `9times`, `1.5s`
- Added `<<<`/`<<<<` as aliases to `import`/`import all`
- non-ASCII identifiers are now allowed.
### 0.1.4
- `.` and its families can now be used with numbers and strings, instead of `[]`.
`a.0.'0'` compiles to `a[0]['0']`.
- Added syntax for cloning objects;
`obj{key:val}` acts like a simple version of ES5 `Object.create`,
creating a prototypal child of `obj` and assigning to `.key` with `val`.
- default arguments can now choose to use `||`/`&&`.
- `super` under a class block now refers to the superclass.
- _.coffee_ extension is no longer supported.
### 0.1.3
- Compilation now prefers single quotes.
- AST now compiles faster, roughly 1.4 times than 0.1.2.
- `[]`/`{}` can now be safely used as an placeholder within array destructuring.
- Improved `--nodes` output.
### 0.1.2
- `...` is now prefix.
- `{0: first, (*-1): last} = array` now works.
- Added `--lex` to the `coco` utility. Removed `--lint`.
- _src/_ now has [doc view](http://satyr.github.io/coco/src/).
### 0.1.1
Release.