Description

Description

This issue will be used to track the works around the formatting of JSX inside the formatter.

Please refer to the ungram file to make sure which grammar is supported by the parser which one is not.

• #2263
• #2272 @NicholasLYang
• #2275 @darrow-olykos
• #2276
• #2277
• #2278
• #2359

For external contributors

Please refer to this section when writing tests for the formatter.

• we want to format valid JSX programs;
• start with simple programs, without comments;
• by default all nodes implement the method format_verbatim, the objective is to remove that and apply a custom formatting;
• use prettier as inspiration to apply the formatting;
• if the snapshot will contain a section like "## Unimplemented nodes/tokens", it means that some nodes haven't been implemented and still use the function format_verbatim;
• when the formatting makes sense, try add some case with comments;
• the test suites will consider a test valid when:
  1. all tokens are formatted and formatted only once;
  2. the emitted code is a valid program (no syntax errors);
  3. the emitted code, when formatted a second time, is the same;
• use the playground to understand the AST/CST;
• use this quick test to inspect the AST. The test is ignored on purpose, so it can be run from an IDE without breaking the CI;
• use the *Fields structs to extract the tokens/nodes;