Add compilePattern helper to state

lib/handle/inline-code.js

@@ -4,8 +4,6 @@
  * @typedef {import('../types.js').State} State
  */
 
-import {patternCompile} from '../util/pattern-compile.js'
-
 inlineCode.peek = inlineCodePeek
 
 /**
@@ -44,7 +42,7 @@ export function inlineCode(node, _, state) {
   // them out.
   while (++index < state.unsafe.length) {
     const pattern = state.unsafe[index]
-    const expression = patternCompile(pattern)
+    const expression = state.compilePattern(pattern)
     /** @type {RegExpExecArray | null} */
     let match
 

lib/index.js

@@ -17,6 +17,7 @@ import {handle as handlers} from './handle/index.js'
 import {join} from './join.js'
 import {unsafe} from './unsafe.js'
 import {association} from './util/association.js'
+import {compilePattern} from './util/compile-pattern.js'
 import {containerPhrasing} from './util/container-phrasing.js'
 import {containerFlow} from './util/container-flow.js'
 import {indentLines} from './util/indent-lines.js'
@@ -42,6 +43,7 @@ export function toMarkdown(tree, options = {}) {
     containerPhrasing: containerPhrasingBound,
     containerFlow: containerFlowBound,
     createTracker: track,
+    compilePattern,
     safe: safeBound,
     stack: [],
     unsafe: [...unsafe],

lib/types.js

@@ -75,6 +75,13 @@
  * @returns {Tracker}
  *   Tracker.
  *
+ * @callback CompilePattern
+ *   Compile an unsafe pattern to a regex.
+ * @param {Unsafe} info
+ *   Pattern.
+ * @returns {RegExp}
+ *   Regex.
+ *
  * @callback AssociationId
  *   Get an identifier from an association to match it to others.
  *
@@ -195,6 +202,8 @@
  *   Pad serialized markdown.
  * @property {AssociationId} associationId
  *   Get an identifier from an association to match it to others.
+ * @property {CompilePattern} compilePattern
+ *   Compile an unsafe pattern to a regex.
  * @property {ContainerPhrasing} containerPhrasing
  *   Serialize the children of a parent that contains phrasing children.
  * @property {ContainerFlow} containerFlow

lib/util/pattern-compile.js → lib/util/compile-pattern.js

@@ -1,12 +1,11 @@
 /**
- * @typedef {import('../types.js').Unsafe} Unsafe
+ * @typedef {import('../types.js').CompilePattern} CompilePattern
  */
 
 /**
- * @param {Unsafe} pattern
- * @returns {RegExp}
+ * @type {CompilePattern}
  */
-export function patternCompile(pattern) {
+export function compilePattern(pattern) {
   if (!pattern._compiled) {
     const before =
       (pattern.atBreak ? '[\\r\\n][\\t ]*' : '') +

lib/util/safe.js

@@ -3,7 +3,6 @@
  * @typedef {import('../types.js').State} State
  */
 
-import {patternCompile} from './pattern-compile.js'
 import {patternInScope} from './pattern-in-scope.js'
 
 /**
@@ -48,7 +47,7 @@ export function safe(state, input, config) {
       continue
     }
 
-    const expression = patternCompile(pattern)
+    const expression = state.compilePattern(pattern)
     /** @type {RegExpExecArray | null} */
     let match
 

readme.md

@@ -478,6 +478,8 @@ Info passed around about the current state (TypeScript type).
     (see [`ConstructName`][api-construct-name])
 *   `indentLines` (`(value: string, map: Map) => string`)
     — pad serialized markdown (see [`Map`][api-map])
+*   `compilePattern` (`(pattern: Unsafe) => RegExp`)
+    — compile an unsafe pattern to a regex (see [`Unsafe`][api-unsafe])
 *   `containerFlow` (`(parent: Node, info: Info) => string`)
     — serialize flow children (see [`Info`][api-info])
 *   `containerPhrasing` (`(parent: Node, info: Info) => string`)