🎉 initiate project *astro_rewrite*

node_modules/micromark-extension-mdx-jsx/dev/lib/syntax.js

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+/**
+ * @typedef {import('micromark-util-types').Extension} Extension
+ * @typedef {import('micromark-factory-mdx-expression').Acorn} Acorn
+ * @typedef {import('micromark-factory-mdx-expression').AcornOptions} AcornOptions
+ */
+
+/**
+ * @typedef Options
+ *   Configuration (optional).
+ * @property {Acorn | null | undefined} [acorn]
+ *   Acorn parser to use (optional).
+ * @property {AcornOptions | null | undefined} [acornOptions]
+ *   Configuration for acorn (default: `{ecmaVersion: 2020, locations: true,
+ *   sourceType: 'module'}`).
+ *
+ *   All fields except `locations` can be set.
+ * @property {boolean | null | undefined} [addResult=false]
+ *   Whether to add `estree` fields to tokens with results from acorn.
+ */
+
+import {codes} from 'micromark-util-symbol/codes.js'
+import {jsxText} from './jsx-text.js'
+import {jsxFlow} from './jsx-flow.js'
+
+/**
+ * Create an extension for `micromark` to enable MDX JSX syntax.
+ *
+ * @param {Options | null | undefined} [options]
+ *   Configuration (optional).
+ * @returns {Extension}
+ *   Extension for `micromark` that can be passed in `extensions` to enable MDX
+ *   JSX syntax.
+ */
+export function mdxJsx(options) {
+  const settings = options || {}
+  const acorn = settings.acorn
+  /** @type {AcornOptions | undefined} */
+  let acornOptions
+
+  if (acorn) {
+    if (!acorn.parse || !acorn.parseExpressionAt) {
+      throw new Error(
+        'Expected a proper `acorn` instance passed in as `options.acorn`'
+      )
+    }
+
+    acornOptions = Object.assign(
+      {ecmaVersion: 2020, sourceType: 'module'},
+      settings.acornOptions,
+      {locations: true}
+    )
+  } else if (settings.acornOptions || settings.addResult) {
+    throw new Error('Expected an `acorn` instance passed in as `options.acorn`')
+  }
+
+  return {
+    flow: {
+      [codes.lessThan]: jsxFlow(
+        acorn || undefined,
+        acornOptions,
+        settings.addResult || false
+      )
+    },
+    text: {
+      [codes.lessThan]: jsxText(
+        acorn || undefined,
+        acornOptions,
+        settings.addResult || false
+      )
+    }
+  }
+}