dart-sass/CHANGELOG.md
2019-07-25 08:37:01 +01:00

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Markdown

## 1.22.9
* Include argument names when reporting range errors and selector parse errors.
* Avoid double `Error:` headers when reporting selector parse errors.
* Clarify the error message when the wrong number of positional arguments are
passed along with a named argument.
## 1.22.8
### JavaScript API
* Don't crash when running in a directory whose name contains URL-sensitive
characters.
* Drop support for Node Carbon (8.x), which doesn't support `url.pathToFileURL`.
## 1.22.7
* Restrict the supported versions of the Dart SDK to `^2.4.0`.
## 1.22.6
* **Potentially breaking bug fix:** The `keywords()` function now converts
underscore-separated argument names to hyphen-separated names. This matches
LibSass's behavior, but not Ruby Sass's.
* Further improve performance for logic-heavy stylesheets.
* Improve a few error messages.
## 1.22.5
### JavaScript API
* Improve performance for logic-heavy stylesheets.
## 1.22.4
* Fix a bug where at-rules imported from within a style rule would appear within
that style rule rather than at the root of the document.
## 1.22.3
* **Potentially breaking bug fix:** The argument name for the `saturate()`
function is now `$amount`, to match the name in LibSass and originally in Ruby
Sass.
* **Potentially breaking bug fix:** The `invert()` function now properly returns
`#808080` when passed `$weight: 50%`. This matches the behavior in LibSass and
originally in Ruby Sass, as well as being consistent with other nearby values
of `$weight`.
* **Potentially breaking bug fix:** The `invert()` function now throws an error
if it's used [as a plain CSS function][plain-CSS invert] *and* the Sass-only
`$weight` parameter is passed. This never did anything useful, so it's
considered a bug fix rather than a full breaking change.
[plain-CSS invert]: https://developer.mozilla.org/en-US/docs/Web/CSS/filter-function/invert
* **Potentially breaking bug fix**: The `str-insert()` function now properly
inserts at the end of the string if the `$index` is `-1`. This matches the
behavior in LibSass and originally in Ruby Sass.
* **Potentially breaking bug fix**: An empty map returned by `map-remove()` is
now treated as identical to the literal value `()`, rather than being treated
as though it had a comma separator. This matches the original behavior in Ruby
Sass.
* The `adjust-color()` function no longer throws an error when a large `$alpha`
value is combined with HSL adjustments.
* The `alpha()` function now produces clearer error messages when the wrong
number of arguments are passed.
* Fix a bug where the `str-slice()` function could produce invalid output when
passed a string that contains characters that aren't represented as a single
byte in UTF-16.
* Improve the error message for an unknown separator name passed to the `join()`
or `append()` functions.
* The `zip()` function no longer deadlocks if passed no arguments.
* The `map-remove()` function can now take a `$key` named argument. This matches
the signature in LibSass and originally in Ruby Sass.
## 1.22.2
### JavaScript API
* Avoid re-assigning the `require()` function to make the code statically
analyzable by Webpack.
## 1.22.1
### JavaScript API
* Expand the dependency on `chokidar` to allow 3.x.
## 1.22.0
* Produce better stack traces when importing a file that contains a syntax
error.
* Make deprecation warnings for `!global` variable declarations that create new
variables clearer, especially in the case where the `!global` flag is
unnecessary because the variables are at the top level of the stylesheet.
### Dart API
* Add a `Value.realNull` getter, which returns Dart's `null` if the value is
Sass's null.
## 1.21.0
### Dart API
* Add a `sass` executable when installing the package through `pub`.
* Add a top-level `warn()` function for custom functions and importers to print
warning messages.
## 1.20.3
* No user-visible changes.
## 1.20.2
* Fix a bug where numbers could be written using exponential notation in
Node.js.
* Fix a crash that would appear when writing some very large integers to CSS.
### Command-Line Interface
* Improve performance for stand-alone packages on Linux and Mac OS.
### JavaScript API
* Pass imports to custom importers before resolving them using `includePaths` or
the `SASS_PATH` environment variable. This matches Node Sass's behavior, so
it's considered a bug fix.
## 1.20.1
* No user-visible changes.
## 1.20.0
* Support attribute selector modifiers, such as the `i` in `[title="test" i]`.
### Command-Line Interface
* When compilation fails, Sass will now write the error message to the CSS
output as a comment and as the `content` property of a `body::before` rule so
it will show up in the browser (unless compiling to standard output). This can
be disabled with the `--no-error-css` flag, or forced even when compiling to
standard output with the `--error-css` flag.
### Dart API
* Added `SassException.toCssString()`, which returns the contents of a CSS
stylesheet describing the error, as above.
## 1.19.0
* Allow `!` in `url()`s without quotes.
### Dart API
* `FilesystemImporter` now doesn't change its effective directory if the working
directory changes, even if it's passed a relative argument.
## 1.18.0
* Avoid recursively listing directories when finding the canonical name of a
file on case-insensitive filesystems.
* Fix importing files relative to `package:`-imported files.
* Don't claim that "package:" URLs aren't supported when they actually are.
### Command-Line Interface
* Add a `--no-charset` flag. If this flag is set, Sass will never emit a
`@charset` declaration or a byte-order mark, even if the CSS file contains
non-ASCII characters.
### Dart API
* Add a `charset` option to `compile()`, `compileString()`, `compileAsync()` and
`compileStringAsync()`. If this option is set to `false`, Sass will never emit
a `@charset` declaration or a byte-order mark, even if the CSS file contains
non-ASCII characters.
* Explicitly require that importers' `canonicalize()` methods be able to take
paths relative to their outputs as valid inputs. This isn't considered a
breaking change because the importer infrastructure already required this in
practice.
## 1.17.4
* Consistently parse U+000C FORM FEED, U+000D CARRIAGE RETURN, and sequences of
U+000D CARRIAGE RETURN followed by U+000A LINE FEED as individual newlines.
### JavaScript API
* Add a `sass.types.Error` constructor as an alias for `Error`. This makes our
custom function API compatible with Node Sass's.
## 1.17.3
* Fix an edge case where slash-separated numbers were written to the stylesheet
with a slash even when they're used as part of another arithmetic operation,
such as being concatenated with a string.
* Don't put style rules inside empty `@keyframes` selectors.
## 1.17.2
* Deprecate `!global` variable assignments to variables that aren't yet defined.
This deprecation message can be avoided by assigning variables to `null` at
the top level before globally assigning values to them.
### Dart API
* Explicitly mark classes that were never intended to be subclassed or
implemented as "sealed".
## 1.17.1
* Properly quote attribute selector values that start with identifiers but end
with a non-identifier character.
## 1.17.0
* Improve error output, particularly for errors that cover multiple lines.
* Improve source locations for some parse errors. Rather than pointing to the
next token that wasn't what was expected, they point *after* the previous
token. This should generally provide more context for the syntax error.
* Produce a better error message for style rules that are missing the closing
`}`.
* Produce a better error message for style rules and property declarations
within `@function` rules.
### Command-Line Interface
* Passing a directory on the command line now compiles all Sass source files in
the directory to CSS files in the same directory, as though `dir:dir` were
passed instead of just `dir`.
* The new error output uses non-ASCII Unicode characters by default. Add a
`--no-unicode` flag to disable this.
## 1.16.1
* Fix a performance bug where stylesheet evaluation could take a very long time
when many binary operators were used in sequence.
## 1.16.0
* `rgb()` and `hsl()` now treat unquoted strings beginning with `env()`,
`min()`, and `max()` as special number strings like `calc()`.
## 1.15.3
* Properly merge `all and` media queries. These queries were previously being
merged as though `all` referred to a specific media type, rather than all
media types.
* Never remove units from 0 values in compressed mode. This wasn't safe in
general, since some properties (such as `line-height`) interpret `0` as a
`<number>` rather than a `<length>` which can break CSS transforms. It's
better to do this optimization in a dedicated compressor that's aware of CSS
property semantics.
* Match Ruby Sass's behavior in some edge-cases involving numbers with many
significant digits.
* Emit escaped tab characters in identifiers as `\9` rather than a backslash
followed by a literal tab.
### Command-Line Interface
* The source map generated for a stylesheet read from standard input now uses a
`data:` URL to include that stylesheet's contents in the source map.
### Node JS API
* `this.includePaths` for a running importer is now a `;`-separated string on
Windows, rather than `:`-separated. This matches Node Sass's behavior.
### Dart API
* The URL used in a source map to refer to a stylesheet loaded from an importer
is now `ImportResult.sourceMapUrl` as documented.
## 1.15.2
### Node JS API
* When `setValue()` is called on a Sass string object, make it unquoted even if
it was quoted originally, to match the behavior of Node Sass.
## 1.15.1
* Always add quotes to attribute selector values that begin with `--`, since IE
11 doesn't consider them to be identifiers.
## 1.15.0
* Add support for passing arguments to `@content` blocks. See [the
proposal][content-args] for details.
* Add support for the new `rgb()` and `hsl()` syntax introduced in CSS Colors
Level 4, such as `rgb(0% 100% 0% / 0.5)`. See [the proposal][color-4-rgb-hsl]
for more details.
* Add support for interpolation in at-rule names. See [the
proposal][at-rule-interpolation] for details.
* Add paths from the `SASS_PATH` environment variable to the load paths in the
command-line interface, Dart API, and JS API. These load paths are checked
just after the load paths explicitly passed by the user.
* Allow saturation and lightness values outside of the `0%` to `100%` range in
the `hsl()` and `hsla()` functions. They're now clamped to be within that
range rather than producing an error if they're outside it.
* Properly compile selectors that end in escaped whitespace.
[content-args]: https://github.com/sass/language/blob/master/accepted/content-args.md
[color-4-rgb-hsl]: https://github.com/sass/language/blob/master/accepted/color-4-rgb-hsl.md
[at-rule-interpolation]: https://github.com/sass/language/blob/master/accepted/at-rule-interpolation.md
### JavaScript API
* Always include the error location in error messages.
## 1.14.4
* Properly escape U+0009 CHARACTER TABULATION in unquoted strings.
## 1.14.3
* Treat `:before`, `:after`, `:first-line`, and `:first-letter` as
pseudo-elements for the purposes of `@extend`.
* When running in compressed mode, remove spaces around combinators in complex
selectors, so a selector like `a > b` is output as `a>b`.
* Properly indicate the source span for errors involving binary operation
expressions whose operands are parenthesized.
## 1.14.2
* Fix a bug where loading the same stylesheet from two different import paths
could cause its imports to fail to resolve.
* Properly escape U+001F INFORMATION SEPARATOR ONE in unquoted strings.
### Command-Line Interface
* Don't crash when using `@debug` in a stylesheet passed on standard input.
### Dart API
* `AsyncImporter.canonicalize()` and `Importer.canonicalize()` must now return
absolute URLs. Relative URLs are still supported, but are deprecated and will
be removed in a future release.
## 1.14.1
* Canonicalize escaped digits at the beginning of identifiers as hex escapes.
* Properly parse property declarations that are both *in* content blocks and
written *after* content blocks.
### Command-Line Interface
* Print more readable paths in `--watch` mode.
## 1.14.0
### BREAKING CHANGE
In accordance with our [compatibility policy][], breaking changes made for CSS
compatibility reasons are released as minor version revision after a three-month
deprecation period.
[compatibility policy]: README.md#compatibility-policy
* Tokens such as `#abcd` that are now interpreted as hex colors with alpha
channels, rather than unquoted ID strings.
## 1.13.4
### Node JS
* Tweak JS compilation options to substantially improve performance.
## 1.13.3
* Properly generate source maps for stylesheets that emit `@charset`
declarations.
### Command-Line Interface
* Don't error out when passing `--embed-source-maps` along with
`--embed-sources` for stylesheets that contain non-ASCII characters.
## 1.13.2
* Properly parse `:nth-child()` and `:nth-last-child()` selectors with
whitespace around the argument.
* Don't emit extra whitespace in the arguments for `:nth-child()` and
`:nth-last-child()` selectors.
* Fix support for CSS hacks in plain CSS mode.
## 1.13.1
* Allow an IE-style single equals operator in plain CSS imports.
## 1.13.0
* Allow `@extend` to be used with multiple comma-separated simple selectors.
This is already supported by other implementations, but fell through the
cracks for Dart Sass until now.
* Don't crash when a media rule contains another media rule followed by a style
rule.
## 1.12.0
### Dart API
* Add a `SassException` type that provides information about Sass compilation
failures.
### Node JS API
* Remove the source map comment from the compiled JS. We don't ship with the
source map, so this pointed to nothing.
## 1.11.0
* Add support for importing plain CSS files. They can only be imported *without*
an extension—for example, `@import "style"` will import `style.css`. Plain CSS
files imported this way only support standard CSS features, not Sass
extensions.
See [the proposal][css-import] for details.
* Add support for CSS's `min()` and `max()` [math functions][]. A `min()` and
`max()` call will continue to be parsed as a Sass function if it involves any
Sass-specific features like variables or function calls, but if it's valid
plain CSS (optionally with interpolation) it will be emitted as plain CSS instead.
See [the proposal][css-min-max] for details.
* Add support for range-format media features like `(10px < width < 100px)`. See
[the proposal][media-ranges] for details.
* Normalize escape codes in identifiers so that, for example, `éclair` and
`\E9clair` are parsed to the same value. See
[the proposal][identifier-escapes] for details.
* Don't choke on a [byte-order mark][] at the beginning of a document when
running in JavaScript.
[math functions]: https://drafts.csswg.org/css-values/#math-function
[css-import]: https://github.com/sass/language/blob/master/accepted/css-imports.md
[css-min-max]: https://github.com/sass/language/blob/master/accepted/min-max.md
[media-ranges]: https://github.com/sass/language/blob/master/accepted/media-ranges.md
[identifier-escapes]: https://github.com/sass/language/blob/master/accepted/identifier-escapes.md
[byte-order mark]: https://en.wikipedia.org/wiki/Byte_order_mark
### Command-Line Interface
* The `--watch` command now continues to recompile a file after a syntax error
has been detected.
### Dart API
* Added a `Syntax` enum to indicate syntaxes for Sass source files.
* The `compile()` and `compileAsync()` functions now parse files with the `.css`
extension as plain CSS.
* Added a `syntax` parameter to `compileString()` and `compileStringAsync()`.
* Deprecated the `indented` parameter to `compileString()` and `compileStringAsync()`.
* Added a `syntax` parameter to `new ImporterResult()` and a
`ImporterResult.syntax` getter to set the syntax of the source file.
* Deprecated the `indented` parameter to `new ImporterResult()` and the
`ImporterResult.indented` getter in favor of `syntax`.
## 1.10.4
### Command-Line Interface
* Fix a Homebrew installation failure.
## 1.10.3
### Command-Line Interface
* Run the Chocolatey script with the correct arguments so it doesn't crash.
## 1.10.2
* No user-visible changes.
## 1.10.1
### Node JS API
* Don't crash when passing both `includePaths` and `importer`.
## 1.10.0
* When two `@media` rules' queries can't be merged, leave nested rules in place
for browsers that support them.
* Fix a typo in an error message.
## 1.9.2
### Node JS API
* Produce more readable filesystem errors, such as when a file doesn't exist.
## 1.9.1
### Command-Line Interface
* Don't emit ANSI codes to Windows terminals that don't support them.
* Fix a bug where `--watch` crashed on Mac OS.
## 1.9.0
### Node API
* Add support for `new sass.types.Color(argb)` for creating colors from ARGB hex
numbers. This was overlooked when initially adding support for Node Sass's
JavaScript API.
## 1.8.0
### Command-Line Interface
* Add a `--poll` flag to make `--watch` mode repeatedly check the filesystem for
updates rather than relying on native filesystem notifications.
* Add a `--stop-on-error` flag to stop compiling additional files once an error
is encountered.
## 1.7.3
* No user-visible changes.
## 1.7.2
* Add a deprecation warning for `@-moz-document`, except for cases where only an
empty `url-prefix()` is used. Support is [being removed from Firefox][] and
will eventually be removed from Sass as well.
[being removed from Firefox]: https://www.fxsitecompat.com/en-CA/docs/2018/moz-document-support-has-been-dropped-except-for-empty-url-prefix/
* Fix a bug where `@-moz-document` functions with string arguments weren't being
parsed.
### Command-Line Interface
* Don't crash when a syntax error is added to a watched file.
## 1.7.1
* Fix crashes in released binaries.
## 1.7.0
* Emit deprecation warnings for tokens such as `#abcd` that are ambiguous
between ID strings and hex colors with alpha channels. These will be
interpreted as colors in a release on or after 19 September 2018.
* Parse unambiguous hex colors with alpha channels as colors.
* Fix a bug where relative imports from files on the load path could look in the
incorrect location.
## 1.6.2
### Command-Line Interface
* Fix a bug where the source map comment in the generated CSS could refer to the
source map file using an incorrect URL.
## 1.6.1
* No user-visible changes.
## 1.6.0
* Produce better errors when expected tokens are missing before a closing brace.
* Avoid crashing when compiling a non-partial stylesheet that exists on the
filesystem next to a partial with the same name.
### Command-Line Interface
* Add support for the `--watch`, which watches for changes in Sass files on the
filesystem and ensures that the compiled CSS is up-to-date.
* When using `--update`, surface errors when an import doesn't exist even if the
file containing the import hasn't been modified.
* When compilation fails, delete the output file rather than leaving an outdated
version.
## 1.5.1
* Fix a bug where an absolute Windows path would be considered an `input:output`
pair.
* Forbid custom properties that have no values, like `--foo:;`, since they're
forbidden by the CSS spec.
## 1.5.0
* Fix a bug where an importer would be passed an incorrectly-resolved URL when
handling a relative import.
* Throw an error when an import is ambiguous due to a partial and a non-partial
with the same name, or multiple files with different extensions. This matches
the standard Sass behavior.
### Command-Line Interface
* Add an `--interactive` flag that supports interactively running Sass
expressions (thanks to [Jen Thakar][]!).
[Jen Thakar]: https://github.com/jathak
## 1.4.0
* Improve the error message for invalid semicolons in the indented syntax.
* Properly disallow semicolons after declarations in the indented syntax.
### Command-Line Interface
* Add support for compiling multiple files at once by writing
`sass input.scss:output.css`. Note that unlike Ruby Sass, this *always*
compiles files by default regardless of when they were modified.
This syntax also supports compiling entire directories at once. For example,
`sass templates/stylesheets:public/css` compiles all non-partial Sass files
in `templates/stylesheets` to CSS files in `public/css`.
* Add an `--update` flag that tells Sass to compile only stylesheets that have
been (transitively) modified since the CSS file was generated.
### Dart API
* Add `Importer.modificationTime()` and `AsyncImporter.modificationTime()` which
report the last time a stylesheet was modified.
### Node API
* Generate source maps when the `sourceMaps` option is set to a string and the
`outFile` option is not set.
## 1.3.2
* Add support for `@elseif` as an alias of `@else if`. This is not an
intentional feature, so using it will cause a deprecation warning. It will be
removed at some point in the future.
## 1.3.1
### Node API
* Fix loading imports relative to stylesheets that were themselves imported
though relative include paths.
## 1.3.0
### Command-Line Interface
* Generate source map files by default when writing to disk. This can be
disabled by passing `--no-source-map`.
* Add a `--source-map-urls` option to control whether the source file URLs in
the generated source map are relative or absolute.
* Add an `--embed-sources` option to embed the contents of all source files in
the generated source map.
* Add an `--embed-source-map` option to embed the generated source map as a
`data:` URL in the generated CSS.
### Dart API
* Add a `sourceMap` parameter to `compile()`, `compileString()`,
`compileAsync()`, and `compileStringAsync()`. This takes a callback that's
called with a [`SingleMapping`][] that contains the source map information for
the compiled CSS file.
[`SingleMapping`]: https://www.dartdocs.org/documentation/source_maps/latest/source_maps.parser/SingleMapping-class.html
### Node API
* Added support for the `sourceMap`, `omitSourceMapUrl`, `outFile`,
`sourceMapContents`, `sourceMapEmbed`, and `sourceMapRoot` options to
`render()` and `renderSync()`.
* Fix a bug where passing a relative path to `render()` or `renderSync()` would
cause relative imports to break.
* Fix a crash when printing warnings in stylesheets compiled using `render()` or
`renderSync()`.
* Fix a bug where format errors were reported badly on Windows.
## 1.2.1
* Always emit units in compressed mode for `0` dimensions other than lengths and
angles.
## 1.2.0
* The command-line executable will now create the directory for the resulting
CSS if that directory doesn't exist.
* Properly parse `#{$var} -#{$var}` as two separate values in a list rather than
one value being subtracted from another.
* Improve the error message for extending compound selectors.
## 1.1.1
* Add a commit that was accidentally left out of 1.1.0.
## 1.1.0
* The command-line executable can now be used to write an output file to disk
using `sass input.scss output.css`.
* Use a POSIX-shell-compatible means of finding the location of the `sass` shell
script.
## 1.0.0
**Initial stable release.**
### Changes Since 1.0.0-rc.1
* Allow `!` in custom property values ([#260][]).
[#260]: https://github.com/sass/dart-sass/issues/260
#### Dart API
* Remove the deprecated `render()` function.
#### Node API
* Errors are now subtypes of the `Error` type.
* Allow both the `data` and `file` options to be passed to `render()` and
`renderSync()` at once. The `data` option will be used as the contents of the
stylesheet, and the `file` option will be used as the path for error reporting
and relative imports. This matches Node Sass's behavior.
## 1.0.0-rc.1
* Add support for importing an `_index.scss` or `_index.sass` file when
importing a directory.
* Add a `--load-path` command-line option (alias `-I`) for passing additional
paths to search for Sass files to import.
* Add a `--quiet` command-line option (alias `-q`) for silencing warnings.
* Add an `--indented` command-line option for using the indented syntax with a
stylesheet from standard input.
* Don't merge the media queries `not type` and `(feature)`. We had previously
been generating `not type and (feature)`, but that's not actually the
intersection of the two queries.
* Don't crash on `$x % 0`.
* The standalone executable distributed on GitHub is now named `sass` rather
than `dart-sass`. The `dart-sass` executable will remain, with a deprecation
message, until 1.0.0 is released.
### Dart API
* Add a `Logger` class that allows users to control how messages are printed by
stylesheets.
* Add a `logger` parameter to `compile()`, `compileAsync()`, `compileString()`,
and `compileStringAsync()`.
### Node JS API
* Import URLs passed to importers are no longer normalized. For example, if a
stylesheet contains `@import "./foo.scss"`, importers will now receive
`"./foo.scss"` rather than `"foo.scss"`.
## 1.0.0-beta.5.3
* Support hard tabs in the indented syntax.
* Improve the formatting of comments that don't start on the same line as the
opening `/*`.
* Preserve whitespace after `and` in media queries in compressed mode.
### Indented Syntax
* Properly parse multi-line selectors.
* Don't deadlock on `/*` comments.
* Don't add an extra `*/` to comments that already have it.
* Preserve empty lines in `/*` comments.
## 1.0.0-beta.5.2
* Fix a bug where some colors would crash `compressed` mode.
## 1.0.0-beta.5.1
* Add a `compressed` output style.
* Emit a warning when `&&` is used, since it's probably not what the user means.
* `round()` now returns the correct results for negative numbers that should
round down.
* `var()` may now be passed in place of multiple arguments to `rgb()`, `rgba()`,
`hsl()` and `hsla()`.
* Fix some cases where equivalent numbers wouldn't count as the same keys in
maps.
* Fix a bug where multiplication like `(1/1px) * (1px/1)` wouldn't properly
cancel out units.
* Fix a bug where dividing by a compatible unit would produce an invalid
result.
* Remove a non-`sh`-compatible idiom from the standalone shell script.
### Dart API
* Add a `functions` parameter to `compile()`, `compleString()`,
`compileAsync()`, and `compileStringAsync()`. This allows users to define
custom functions in Dart that can be invoked from Sass stylesheets.
* Expose the `Callable` and `AsyncCallable` types, which represent functions
that can be invoked from Sass.
* Expose the `Value` type and its subclasses, as well as the top-level
`sassTrue`, `sassFalse`, and `sassNull` values, which represent Sass values
that may be passed into or returned from custom functions.
* Expose the `OutputStyle` enum, and add a `style` parameter to `compile()`,
`compleString()`, `compileAsync()`, and `compileStringAsync()` that allows
users to control the output style.
### Node JS API
* Support the `functions` option.
* Support the `"compressed"` value for the `outputStyle` option.
## 1.0.0-beta.4
* Support unquoted imports in the indented syntax.
* Fix a crash when `:not(...)` extends a selector that appears in
`:not(:not(...))`.
### Node JS API
* Add support for asynchronous importers to `render()` and `renderSync()`.
### Dart API
* Add `compileAsync()` and `compileStringAsync()` methods. These run
asynchronously, which allows them to take asynchronous importers (see below).
* Add an `AsyncImporter` class. This allows imports to be resolved
asynchronously in case no synchronous APIs are available. `AsyncImporter`s are
only compatible with `compileAysnc()` and `compileStringAsync()`.
## 1.0.0-beta.3
* Properly parse numbers with exponents.
* Don't crash when evaluating CSS variables whose names are entirely
interpolated (for example, `#{--foo}: ...`).
### Node JS API
* Add support for the `importer` option to `render()` and `renderSync()`.
Only synchronous importers are currently supported.
### Dart API
* Added an `Importer` class. This can be extended by users to provide support
for custom resolution for `@import` rules.
* Added built-in `FilesystemImporter` and `PackageImporter` implementations that
support resolving `file:` and `package:` URLs, respectively.
* Added an `importers` argument to the `compile()` and `compileString()`
functions that provides `Importer`s to use when resolving `@import` rules.
* Added a `loadPaths` argument to the `compile()` and `compileString()`
functions that provides paths to search for stylesheets when resolving
`@import` rules. This is a shorthand for passing `FilesystemImporter`s to the
`importers` argument.
## 1.0.0-beta.2
* Add support for the `::slotted()` pseudo-element.
* Generated transparent colors will now be emitted as `rgba(0, 0, 0, 0)` rather
than `transparent`. This works around a bug wherein IE incorrectly handles the
latter format.
### Command-Line Interface
* Improve the logic for whether to use terminal colors by default.
### Node JS API
* Add support for `data`, `includePaths`, `indentedSyntax`, `lineFeed`,
`indentWidth`, and `indentType` options to `render()` and `renderSync()`.
* The result object returned by `render()` and `renderSync()` now includes the
`stats` object which provides metadata about the compilation process.
* The error object thrown by `render()` and `renderSync()` now includes `line`,
`column`, `file`, `status`, and `formatted` fields. The `message` field and
`toString()` also provide more information.
### Dart API
* Add a `renderString()` method for rendering Sass source that's not in a file
on disk.
## 1.0.0-beta.1
* Drop support for the reference combinator. This has been removed from the
spec, and will be deprecated and eventually removed in other implementations.
* Trust type annotations when compiling to JavaScript, which makes it
substantially faster.
* Compile to minified JavaScript, which decreases the code size substantially
and makes startup a little faster.
* Fix a crash when inspecting a string expression that ended in "\a".
* Fix a bug where declarations and `@extend` were allowed outside of a style
rule in certain circumstances.
* Fix `not` in parentheses in `@supports` conditions.
* Allow `url` as an identifier name.
* Properly parse `/***/` in selectors.
* Properly parse unary operators immediately after commas.
* Match Ruby Sass's rounding behavior for all functions.
* Allow `\` at the beginning of a selector in the indented syntax.
* Fix a number of `@extend` bugs:
* `selector-extend()` and `selector-replace()` now allow compound selector
extendees.
* Remove the universal selector `*` when unifying with other selectors.
* Properly unify the result of multiple simple selectors in the same compound
selector being extended.
* Properly handle extensions being extended.
* Properly follow the [first law of `@extend`][laws].
* Fix selector specificity tracking to follow the
[second law of `@extend`][laws].
* Allow extensions that match selectors but fail to unify.
* Partially-extended selectors are no longer used as parent selectors.
* Fix an edge case where both the extender and the extended selector
have invalid combinator sequences.
* Don't crash with a "Bad state: no element" error in certain edge cases.
[laws]: https://github.com/sass/sass/issues/324#issuecomment-4607184
## 1.0.0-alpha.9
* Elements without a namespace (such as `div`) are no longer unified with
elements with the empty namespace (such as `|div`). This unification didn't
match the results returned by `is-superselector()`, and was not guaranteed to
be valid.
* Support `&` within `@at-root`.
* Properly error when a compound selector is followed immediately by `&`.
* Properly handle variable scoping in `@at-root` and nested properties.
* Properly handle placeholder selectors in selector pseudos.
* Properly short-circuit the `or` and `and` operators.
* Support `--$variable`.
* Don't consider unitless numbers equal to numbers with units.
* Warn about using named colors in interpolation.
* Don't emit loud comments in functions.
* Detect import loops.
* Fix `@import` with a `supports()` clause.
* Forbid functions named "and", "or", and "not".
* Fix `type-of()` with a function.
* Emit a nicer error for invalid tokens in a selector.
* Fix `invert()` with a `$weight` parameter.
* Fix a unit-parsing edge-cases.
* Always parse imports with queries as plain CSS imports.
* Support `&` followed by a non-identifier.
* Properly handle split media queries.
* Properly handle a placeholder selector that isn't at the beginning of a
compound selector.
* Fix more `str-slice()` bugs.
* Fix the `%` operator.
* Allow whitespace between `=` and the mixin name in the indented syntax.
* Fix some slash division edge cases.
* Fix `not` when used like a function.
* Fix attribute selectors with single-character values.
* Fix some bugs with the `call()` function.
* Properly handle a backslash followed by a CRLF sequence in a quoted string.
* Fix numbers divided by colors.
* Support slash-separated numbers in arguments to plain CSS functions.
* Error out if a function is passed an unknown named parameter.
* Improve the speed of loading large files on Node.
* Don't consider browser-prefixed selector pseudos to be superselectors of
differently- or non-prefixed selector pseudos with the same base name.
* Fix an `@extend` edge case involving multiple combinators in a row.
* Fix a bug where a `@content` block could get incorrectly passed to a mixin.
* Properly isolate the lexical environments of different calls to the same mixin
and function.
## 1.0.0-alpha.8
* Add the `content-exists()` function.
* Support interpolation in loud comments.
* Fix a bug where even valid semicolons and exclamation marks in custom property
values were disallowed.
* Disallow invalid function names.
* Disallow extending across media queries.
* Properly parse whitespace after `...` in argument declaration lists.
* Support terse mixin syntax in the indented syntax.
* Fix `@at-root` query parsing.
* Support special functions in `@-moz-document`.
* Support `...` after a digit.
* Fix some bugs when treating a map as a list of pairs.
## 1.0.0-alpha.7
* Fix `function-exists()`, `variable-exists()`, and `mixin-exists()` to use the
lexical scope rather than always using the global scope.
* `str-index()` now correctly inserts at negative indices.
* Properly parse `url()`s that contain comment-like text.
* Fix a few more small `@extend` bugs.
* Fix a bug where interpolation in a quoted string was being dropped in some
circumstances.
* Properly handle `@for` rules where each bound has a different unit.
* Forbid mixins and functions from being defined in control directives.
* Fix a superselector-computation edge case involving `:not()`.
* Gracefully handle input files that are invalid UTF-8.
* Print a Sass stack trace when a file fails to load.
## 1.0.0-alpha.6
* Allow `var()` to be passed to `rgb()`, `rgba()`, `hsl()`, and `hsla()`.
* Fix conversions between numbers with `dpi`, `dpcm`, and `dppx` units.
Previously these conversions were inverted.
* Don't crash when calling `str-slice()` with an `$end-at` index lower than the
`$start-at` index.
* `str-slice()` now correctly returns `""` when `$end-at` is negative and points
before the beginning of the string.
* Interpolation in quoted strings now properly preserves newlines.
* Don't crash when passing only `$hue` or no keyword arguments to
`adjust-color()`, `scale-color()`, or `change-color()`.
* Preserve escapes in identifiers. This used to only work for identifiers in
SassScript.
* Fix a few small `@extend` bugs.
## 1.0.0-alpha.5
* Fix bounds-checking for `opacify()`, `fade-in()`, `transparentize()`, and
`fade-out()`.
* Fix a bug with `@extend` superselector calculations.
* Fix some cases where `#{...}--` would fail to parse in selectors.
* Allow a single number to be passed to `saturate()` for use in filter contexts.
* Fix a bug where `**/` would fail to close a loud comment.
* Fix a bug where mixin and function calls could set variables incorrectly.
* Move plain CSS `@import`s to the top of the document.
## 1.0.0-alpha.4
* Add support for bracketed lists.
* Add support for Unicode ranges.
* Add support for the Microsoft-style `=` operator.
* Print the filename for `@debug` rules.
* Fix a bug where `1 + - 2` and similar constructs would crash the parser.
* Fix a bug where `@extend` produced the wrong result when used with
selector combinators.
* Fix a bug where placeholder selectors were not allowed to be unified.
* Fix the `mixin-exists()` function.
* Fix `:nth-child()` and `:nth-last-child()` parsing when they contain `of
selector`.
## 1.0.0-alpha.3
* Fix a bug where color equality didn't take the alpha channel into account.
* Fix a bug with converting some RGB colors to HSL.
* Fix a parent selector resolution bug.
* Properly declare the arguments for `opacify()` and related functions.
* Add a missing dependency on the `stack_trace` package.
* Fix broken Windows archives.
* Emit colors using their original representation if possible.
* Emit colors without an original representation as names if possible.
## 1.0.0-alpha.2
* Fix a bug where variables, functions, and mixins were broken in imported
files.
## 1.0.0-alpha.1
* Initial alpha release.