* Fix support for node 4 (#1988)
* Fix website on iOS Safari (#1970)
Formatting change:
* Position JSX whitespace (`{" "}`) at the end of lines (#1964)
Lots of small fixes, mainly for TypeScript.
* Add basic styled-jsx parsing
* Use eval("require")
* Remove template literal raw and cooked values when it contains CSS
* Set postcss parser to options and group subtree parts
* Gracefully give up TemplateLiteral formatting when it fails
* Position JSX whitespace at the end of lines
Currently we place JSX whitespace at the beginning of lines.
* Use `isLiteral` when determining JSX whitespace
* Initial GraphQL implementation
This is the bare minimum amount of code to make graphql work. Turns out it's pretty easy to add support for other languages :)
* Fixing support for `graphql` parsing
There was a few structural changes with the addition of CSS and Typescript that we had to take into account.
* Fixing file glob, adding `graphql` to yarn.lock
* Removing extraneous file
* Adding `graphql` parser, style changes
* Splitting out graphql printer
* Removing merge conflict
* Fixing yarn.lock
* Addressing code review, using `createError`
* Adding release config
* Using exact version
* Removing destructuring
It turns out that leading comment is attached to the CallExpression which is the last one and not the first one if they fit in a single line, so we want to not check that one.
Fixes#1892
* Add shebang comment nodes to Flow/TypeScript ASTs
Now we handle actually printing the shebang in `printComment`, rather
than lopping it off beforehand and reattaching it afterward, as
suggested in https://github.com/prettier/prettier/pull/1718#issuecomment-303876792
* Dedupe AST shebang-insertion code into helper function
* Add `formatWithCursor` API with `cursorOffset` option
This addresses https://github.com/prettier/prettier/issues/93 by
adding a new option, `cursorOffset`, that tells prettier to determine
the location of the cursor after the code has been formatted. This is
accessible through the API via a new function, `formatWithCursor`, which
returns a `{formatted: string, cursorOffset: ?number}`.
Here's a usage example:
```js
require("prettier").formatWithCursor(" 1", { cursorOffset: 2 });
// -> { formatted: '1;\n', cursorOffset: 1 }
```
* Add `--cursor-offset` CLI option
It will print out the offset instead of the formatted output. This
makes it easier to test. For example:
echo ' 1' | prettier --stdin --cursor-offset 2
# prints 1
* Add basic test of cursor translation
* Document `cursorOffset` option and `formatWithCursor()`
* Print translated cursor offset to stderr when --cursor-offset is given
This lets us continue to print the formatted code, while also
communicating the updated cursor position.
See https://github.com/prettier/prettier/pull/1637#discussion_r119735496
* doc-print cursor placeholder in comments.printComments()
See https://github.com/prettier/prettier/pull/1637#discussion_r119735149
* Compare array index to -1 instead of >= 0 to determine element presence
See https://github.com/prettier/prettier/pull/1637#discussion_r119736623
* Return {formatted, cursor} from printDocToString() instead of mutating options
See https://github.com/prettier/prettier/pull/1637#discussion_r119737354
* Adding --stdin-filepath option in order to enable filetype inference from
stdin
* Making sure error messages are 1 indexed based instead of zero indexed
* Adding --stdin-filepath option in order to enable filetype inference from stdin to allow chosing css parser
* Adding readme information on the filepath option
* Also including support for typescript parser inference.
* Running linter
This tweaks our JSX formatting to only put a JSX whitespace `{" "}` on a line by itself when it comes before or after a multiline element.
When preceding a text or single line element it appear on the same line as that element.
* Fix unstable JSX output by ensuring we follow `fill` rules.
This changes makes us more strict about ensuring our JSX children follow the alternating content/whitespace format expected by the `fill` primitive.
Previously there were some cases where could get out of sync which would throw out the formatting.
* Simplify whitespace wrangling
# Conflicts:
# src/printer.js
This avoids making it seems like it is indented by 4 characters instead of two. The downside is that if the condition is multi-line it's not going to be properly aligned, but I feel it's a better trade-offs. If you are doing nested ternaries, you usually have small conditions.
The docs go over a bunch of edge cases, might as well have it as a test :)
http://lesscss.org/features/
I just had to remove
```css
.weird-element {
content: ^//* some horrible but needed css hack;
}
```
but i'm not sure if it's real less.
We use a heuristic to figure out if it's a SCSS or Less file. And if it doesn't work, we try again with the other one. We do the same for JSX and TypeScript.
Fixes#1784
Babylon has a bug (I guess) with locations for classes where decorators are involved. Instead of the class starting at the first decorator, it starts at the beginning of the `class` keyword. By moving the location to the first comment, it solves --some-- of the issues with decorator comments.
The issue is really that the media query parser fails to parse the inner queries and just gives a raw string for the expression, but it should be safe to remove extra spaces. I can't make it rmeove spaces inside () that way unfortunately :(
It's very annoying to have to have a static definition of the ast, we should instead just traverse the objects to discover it. We just need to make sure not to have any cycles, but it's also good for debugging anyway.
This fixed a few comments already :)
- I want to get to a place where we don't use ast-types in order to do the traversal. This almost removes it from fast-path.
- Remove FastPath.from and copy
- Use .prototype instead of the weird Fpp
- Remove unused TODO
- Remove unused needsParen condition with a bunch of associated code
A long time ago I introduced the ability to break for import statements. Then, later on, we removed the ability for require to break and go over the 80 column mark. In order to be consistent, we should do the same for import statements as well.
There can often be something that breaks inside of `extends` so it's looking weird to break twice. It now only breaks on `implements` and make sure to put each element on its own line.
Fixes#1520
I didn't intend for putting parenthesis there in the first place but it slept through. Since it was going to trigger a ton of changes I held up changing it, but I feel like we need to do it sooner than later otherwise we're not going to be able to do it. A lot of people writing functional components are going to be very happy about this change :)
TypeScript doesn't have the concept of `?` for nullable options and instead you have to write `| null` and `| void`. This is annoying to have it use the long form, so we're now inlining them.
While working on this, I found out a few issues with the way we deal with those:
- We only align objects if the parent is a union. This means that if you have `Array<{ object }>`, the object is not aligned properly. The fix is to move the alignment logic to the union, and not the child.
- When doing so, it messes up with the comment alignment, so we have to manually handle children comment printing in the union code.
It doesn't yet fix#1727 because the hardcoded type names are different, i'll follow up in a PR.
This keeps being requested and we're not using it at Facebook, so I don't particularly care which way it should be printed. We now force multiline if there's at least one declaration with a value. We don't want to break all the variables that are just declared.
Fixes#1607
We don't always want to automatically forward this option but we can always forward it to `n.body`. If it's an arrow function, it's doing the intended behavior, otherwise, it's not going to ignore it and not forward it. What we don't want is for arrow -> blockStatement -> arrow to get it, but we're good.
Fixes#1652
The function isPreviousLineEmpty comment doesn't skip comments (on purpose, see comment above that method :P) so the detection is messed up. Turns out, it's easier to just use isNextLineEmpty like everywhere else.
Fixes#1708
We completely butcher comments inside of template literals. The fix is to not be able to attach comments to TemplateExpression nodes and to avoid comments that are ine one expression to be moved to another expression. We now have the boundary to prevent outputting invalid code.
Fixes#1617
This is very unfortunate that we have to change the generic function that prints code but we want the JSXElement node to handle its comments printing itself in order to write them inside of the parenthesis instead of outside.
Fixes#555
I implemented indenting based on any character that's before the `${` but it was not the right behavior. Instead people want to indent based on the indentation of this line. It's easy to fix :)
Fixes parts of #1626
I wanted to see how hard it would be to add support for CSS inside of prettier. Turns out, it's not that hard. I spent a few hours printing post-css values and getting all the stylefmt unit tests to not throw.
I kept adding places where comments could be but more use cases kept creeping in. So now this is a holistical approach, we check all the comments that can be between two nodes. This way we should be good to go :)
* Keep unusual unicode spaces
This no longer converts unusual unicode whitespace characters (such as a non-breaking space) into normal spaces.
* Tweak comment based on PR feedback
* Move range extension code into helper functions
* Add findNodeByOffset() helper
This was adapted from cbc1929c64
* Test extending formatted range to entire node
* Fix extending formatted range to entire node
* Fix style errors
* Add run_file test function
This makes it possible to use different options on a per-file basis,
which is useful for things like range formatting tests.
* Test extending the format range to nearest parseable node
This means you can select the range of a `catch` clause, attempt to
format it, and have the `try` formatted as well, rather than throwing an
error.
* Fix extending the format range to nearest parseable node
This means you can select the range of a `catch` clause, attempt to
format it, and have the `try` formatted as well, rather than throwing an
error.
* Test that external indentation is left alone when formatting a range
* Preserve external indentation when formatting a range
* Dedupe range formatting traversal callbacks
* Simplify range formatting traversal using ast-types
See https://github.com/prettier/prettier/pull/1659#issuecomment-302974798
* Make range formatting traversal more efficient
There's less unnecessary parsing now.
* Fix style errors
* Add test where range expanding fails
* Fix test where range expanding fails
This makes sure that the range contains the entirety of the nodes
containing each of the range's endpoints.
* Add test for expanding range to beginning of line
* Pass test for expanding range to beginning of line
This makes it so that indentation before the range is added to the
formatted range.
* Don't parse/stringify AST to detect pre-range indentation
See https://github.com/prettier/prettier/pull/1659#discussion_r117790671
* When formatting a range, find closest statement rather than parsing
The `isStatement` implementation came from `docs/prettier.min.js`.
See https://github.com/prettier/prettier/pull/1659#issuecomment-303154770
* Add test for range-formatting a FunctionDeclaration's argument object
* Include FunctionDeclaration when searching for nearest node to range-format
From the spec, a Program is a series of SourceElements, each of which is
either a Statement or a FunctionDeclaration. See
https://www.ecma-international.org/ecma-262/5.1/#sec-A.5
* Remove unnecessary try-catch
See https://github.com/prettier/prettier/pull/1659#discussion_r117810096
* Add tests with multiple statements
See https://github.com/prettier/prettier/pull/1659#discussion_r117810753
* Remove unnecessary arguments from findNodeByOffset()
* Contract format range to ensure it starts/ends on nodes
* Specify test ranges in the fixtures
See https://github.com/prettier/prettier/pull/1659#discussion_r117811186
* Remove unnecessary comments from range fixtures
* Remove run_file test function
It's no longer used. This essentially reverts
8241216e68f2e0da997a4f558b03658d642c89a2
* Update range formatting docs
Clarify that the range expands to the nearest statement, and not to the
end of the line.
* Don't overwrite test options when detecting range
Now that multiple files share the same object again, we shouldn't be
re-assigning to it.
* Reuse already-read fixtures for AST_COMPARE=1 tests
* Remove `run_file` global from test eslintrc
* Undo package.json churn
`yarn` reformatted it before, but the whitespace visually sets off the
comment, so let's put it back how it was before.
See https://github.com/prettier/prettier/pull/1659#discussion_r117864655
* Remove misleading comments from isSourceElement
See https://github.com/prettier/prettier/pull/1659#discussion_r117865196
* Loop backwards through string instead of reversing it
See https://github.com/prettier/prettier/pull/1659#discussion_r117865759
* Don't recompute indent string when formatting range
See https://github.com/prettier/prettier/pull/1659#discussion_r117867268
* Rename findNodeByOffset to findNodeAtOffset
"Find x by y" is the common usage for finding an `x` by a key `y`.
However, since "by" has positional meaning, let's use "at" instead.
See https://github.com/prettier/prettier/pull/1659#discussion_r117865121
* Always trimRight() in formatRange and explain why
See https://github.com/prettier/prettier/pull/1659#discussion_r117864635
* Test formatting a range that crosses AST levels
See https://github.com/prettier/prettier/pull/1659#issuecomment-303243688
* Fix formatting a range that crosses AST levels
See https://github.com/prettier/prettier/pull/1659#issuecomment-303243688
* Remove unnecessary try-catch
See e52db5e9f9 (r117878763)
* Add test demonstrating range formatting indent detection
* Detect alignment from text on line before range, but don't reformat it
This avoids reformatting non-indentation that happens to precede the
range on the same line, while still correctly indenting the range based
on it.
See https://github.com/prettier/prettier/pull/1659#discussion_r117881430
* Improve ESLint setup
- Uses `eslint:recommended` + a handful more rules.
- Uses .eslintignore so that editors can understand which files to lint.
- Uses .eslintrc<strong>.js</strong> so more editors get syntax highlighting.
* Fix ESLint errors
About half of them were fixed by `eslint . --fix`.
* Add `--range-start` and `--range-end` options to format only parts of the input
These options default to `0` and `Infinity`, respectively, so that the
entire input is formatted by default. However, if either option is
specified such that a node lies completely outside the resulting range,
the node will be treated as if it has a `// prettier-ignore` comment.
Related to https://github.com/prettier/prettier/pull/1577#issuecomment-300551179
Related to https://github.com/prettier/prettier/issues/1324
Related to https://github.com/prettier/prettier/issues/593
* printer: Extract hasPrettierIgnoreComment() helper
* Move isOutsideRange() to util
* Don't throw errors about comments outside range "not printing"
* Remove unnecessary check from isOutsideRange()
* Make --range-end exclusive
This lets it use the conventional way of specifying ranges in strings.
Note that if the rangeEnd in the tests is changed to 158, it will fail,
but it wouldn't have failed before this change.
* Change range formatting approach
NOTE: This doesn't pass its test yet. Note that since we're reading the
indentation from the first line, it is expected not to change. However,
a semicolon is added, and the lines outside the range are not changed.
The new approach is roughly:
* Require that the range exactly covers an integer number of lines of the input
* Detect the indentation of the line the range starts on
* Format the range's substring using `printAstToDoc`
* Add enough `indent`s to the doc to restore the detected indentation
* Format the doc to a string with `printDocToString`
* Prepend/append the original input before/after the range
See https://github.com/prettier/prettier/pull/1609#issuecomment-301582273
---
Given `tests/range/range.js`, run the following:
prettier tests/range/range.js --range-start 165 --range-end 246
See the range's text with:
dd if=tests/range/range.js ibs=1 skip=165 count=81 2>/dev/null
* Don't use default function parameters
Node v4 doesn't support them. See
http://node.green/#ES2015-syntax-default-function-parameters
* Hackily fix indentation of range formatting
See
https://github.com/prettier/prettier/pull/1609#issuecomment-301625368
Also update the snapshot to reflect that the indentation actually should
decrease by one space, since there were 13 spaces in the input and we
round down after dividing by tabWidth.
* Revert "printer: Extract hasPrettierIgnoreComment() helper"
See https://github.com/prettier/prettier/pull/1609#discussion_r116804853
This reverts commit 62bf068ca98f69d4a7fd0ae188b3554d409eee8d.
* Test automatically using the beginning of the rangeStart line and same for the end
See https://github.com/prettier/prettier/pull/1609#issuecomment-301862076
* Fix automatically using the beginning of the rangeStart line and same for the end
See https://github.com/prettier/prettier/pull/1609#issuecomment-301862076
* Propagate breaks after adding an indentation-triggering hardline
See c1a61ebde8 (r116805581)
* Extract getAlignmentSize(), use instead of countIndents()
See c1a61ebde8 (r116804694)
* Extract addAlignmentToDoc(), use instead of addIndentsToDoc()
See c1a61ebde8 (r116804694)
* Document that --range-start and --range-end include the entire line
* Fix rangeStart calculation
Before, it was incorrectly resulting in 1 when the originally provided
value was 0
* Extract formatRange() helper function
* Move getAlignmentSize() from printer to util
This addresses https://github.com/prettier/prettier/pull/1609#discussion_r117636241
* Move addAlignmentToDoc() from printer to doc-builders
This addresses https://github.com/prettier/prettier/pull/1609#discussion_r117636251
* fix TSCallSignature
* fix TSTypeReference
* remove test with invalid syntax
* --wip--
* partially fix TSTypeReference
* get comments right for TypeScript interfaces
* Use `const`/`let` instead of `var`
This was done with [lebab], by running:
lebab --replace src -t let
[lebab]: https://github.com/lebab/lebab
* Remove remaining `var` usages
These were not automatically fixed by `lebab`, so they had to be
manually refactored.
* Add trailing space when changing template literal line comment to block
This was originally part of https://github.com/prettier/prettier/pull/1580,
but I decided not to include it there, since it was unrelated.
* Extract util.isBlockComment() helper
* printer: Simplify genericPrintNoParens() JSXEmptyExpression logic
* Extract makeBlockComment() helper
* Move hasBlockComments() from printer to util
Addresses https://github.com/prettier/prettier/pull/1602#issuecomment-301344310
* Revert "Extract makeBlockComment() helper"
This reverts commit 7e940f43b62fb34d71fc3015ed14f9c59cf61d1a.
* Revert "Add trailing space when changing template literal line comment to block"
This reverts commit b3cf5b24c576ed062ca86975a09138e3f4ac9597.
This makes it easier to format code snippets including a `return`
statement, without having to format the entire function. For example,
given the following code:
```js
function f() {
return someVeryLongStringA && someVeryLongStringB && someVeryLongStringC && someVeryLongStringD
}
```
a developer could select the line containing `return`, then use
prettier to format the code to:
```js
function f() {
return (
someVeryLongStringA &&
someVeryLongStringB &&
someVeryLongStringC &&
someVeryLongStringD
);
}
```
which can then be reindented by the editor.
---
Related to https://github.com/prettier/prettier/issues/593
Lucas Azzola