up n_m

node_modules/mdast-util-to-markdown/lib/handle/emphasis.js

@@ -0,0 +1,48 @@
+/**
+ * @typedef {import('mdast').Emphasis} Emphasis
+ * @typedef {import('mdast').Parents} Parents
+ * @typedef {import('../types.js').Info} Info
+ * @typedef {import('../types.js').State} State
+ */
+
+import {checkEmphasis} from '../util/check-emphasis.js'
+
+emphasis.peek = emphasisPeek
+
+// To do: there are cases where emphasis cannot “form” depending on the
+// previous or next character of sequences.
+// There’s no way around that though, except for injecting zero-width stuff.
+// Do we need to safeguard against that?
+/**
+ * @param {Emphasis} node
+ * @param {Parents | undefined} _
+ * @param {State} state
+ * @param {Info} info
+ * @returns {string}
+ */
+export function emphasis(node, _, state, info) {
+  const marker = checkEmphasis(state)
+  const exit = state.enter('emphasis')
+  const tracker = state.createTracker(info)
+  let value = tracker.move(marker)
+  value += tracker.move(
+    state.containerPhrasing(node, {
+      before: value,
+      after: marker,
+      ...tracker.current()
+    })
+  )
+  value += tracker.move(marker)
+  exit()
+  return value
+}
+
+/**
+ * @param {Emphasis} _
+ * @param {Parents | undefined} _1
+ * @param {State} state
+ * @returns {string}
+ */
+function emphasisPeek(_, _1, state) {
+  return state.options.emphasis || '*'
+}