feat(prettier): first pass

prettier-plugin-astro/index.js

@@ -1,3 +1,5 @@
+const { doc: { builders: { concat, hardline } } } = require("prettier");
+
 /** @type {Partial<import('prettier').SupportLanguage>[]} */
 module.exports.languages = [
  {
@@ -11,13 +13,55 @@ module.exports.languages = [
 /** @type {Record<string, import('prettier').Parser>} */
 module.exports.parsers = {
  astro: {
- parse: (text, parsers) => {
+ parse: (text, parsers, options) => {
+ const children = [];
+ let frontmatter = text;
+ let content = text;
+
+ if (frontmatter.indexOf('---') > -1) {
+ const delimiterStart = frontmatter.indexOf('---') + 3;
+ frontmatter = frontmatter.slice(delimiterStart);
+ const delimiterEnd = frontmatter.indexOf('---');
+ content = frontmatter.slice(0).slice(delimiterEnd + 3);
+ frontmatter = frontmatter.slice(0, delimiterEnd);
+
+ children.push({
+ type: 'AstroFrontmatter',
+ children: [
+ { type: 'DelimiterStart', value: '---' },
+ {
+ type: 'AstroEmbed',
+ parser: 'babel-ts',
+ value: frontmatter
+ },
+ { type: 'DelimiterEnd', value: '---' }
+ ]
+ })
+ }
+
+ children.push({
+ type: 'AstroContent',
+ children: [
+ {
+ type: 'AstroEmbed',
+ // TODO: handle JSX-like expressions
+ parser: 'html',
+ value: content
+ }
+ ]
+ });
 
+ return {
+ type: 'AstroRoot',
+ children
+ };
  },
  locEnd(node) {
+ // TODO: actually track this
  return node.locEnd
  },
  locStart(node) {
+ // TODO: actually track this
  return node.locStart
  },
  astFormat: 'astro-ast',
@@ -27,10 +71,21 @@ module.exports.parsers = {
 /** @type {Record<string, import('prettier').Printer>} */
 module.exports.printers = {
  'astro-ast': {
- print() {
- /** @type {any} */
- const doc = {};
- return doc;
+ print(path, opts, print) {
+ const node = path.getValue();
+ if (Array.isArray(node)) return concat(path.map(print));
+ if (node.type === 'AstroEmbed') return concat([node]);
+ if (Array.isArray(node.children)) return concat(path.map(print, 'children'));
+
+ if (node.type === 'DelimiterStart') return concat([node.value, hardline]);
+ if (node.type === 'DelimiterEnd') return concat([node.value, hardline, hardline]);
+ return concat([node.value]);
+ },
+ embed(path, print, textToDoc, options) {
+ const node = path.getValue();
+ if (node.type !== 'AstroEmbed') return null;
+
+ return textToDoc(node.value, { ...options, parser: node.parser });
  }
  },
 };