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* chore(deps): upgrade prettier to v1.8.2 * chore: setup lint-docs script * docs: add `<!-- prettier-ignore -->`s * docs: format docs * Revert "docs: format docs" This reverts commit 6dba903987dddc498cb589ca311905f25b6aee53. * chore(prettierrc): set `--no-prose-wrap` * docs: format docs * Revert "docs: format docs" This reverts commit 139bd744b6921916be8fac4fa3bab83bae5d12df. * docs: tweak * docs: format docs * chore: rename .prettierrc * chore: rename back to .prettierrc * chore: split out third-party * refactor: fix linting * chore: do not split out third-party on website
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id, title
| id | title |
|---|---|
| technical-details | Technical Details |
This printer is a fork of recast's printer with its algorithm replaced by the one described by Wadler in "A prettier printer". There still may be leftover code from recast that needs to be cleaned up.
The basic idea is that the printer takes an AST and returns an intermediate representation of the output, and the printer uses that to generate a string. The advantage is that the printer can "measure" the IR and see if the output is going to fit on a line, and break if not.
This means that most of the logic of printing an AST involves generating an abstract representation of the output involving certain commands. For example, concat(["(", line, arg, line ")"]) would represent a concatenation of opening parens, an argument, and closing parens. But if that doesn't fit on one line, the printer can break where line is specified.
More (rough) details can be found in commands.md.