chore: minor code imprs

Author: antongolub

.size-limit.json

@@ -66,7 +66,7 @@
       "README.md",
       "LICENSE"
     ],
-    "limit": "911.60 kB",
+    "limit": "911.65 kB",
     "brotli": false,
     "gzip": false
   }

build/cli.cjs

@@ -68,35 +68,31 @@ function transformMarkdown(buf) {
   let state = "root";
   let prevEmpty = true;
   let fenceChar = "";
-  let stripRe = /^/;
+  let stripRe = null;
   let endRe = /^$/;
   let linePrefix = "";
   let closeOut = "";
-  let closeBlank = false;
-  const isEnd = (s) => fenceChar && endRe.test(s);
+  const isEnd = (s) => fenceChar !== "" && endRe.test(s);
   for (const line of (0, import_util.bufToString)(buf).split(/\r?\n/)) {
     switch (state) {
       case "root": {
         const g = (_a2 = line.match(fenceRe)) == null ? void 0 : _a2.groups;
         if (g == null ? void 0 : g.fence) {
           fenceChar = g.fence[0];
-          stripRe = g.indent ? new RegExp(`^ {0,${g.indent.length}}`) : /^/;
+          stripRe = g.indent ? new RegExp(`^ {0,${g.indent.length}}`) : null;
           endRe = new RegExp(`^ {0,3}${fenceChar}{${g.fence.length},}[ \\t]*$`);
           if (g.js) {
             out.push("");
             linePrefix = "";
             closeOut = "";
-            closeBlank = true;
           } else if (g.bash) {
             out.push("await $`");
             linePrefix = "";
             closeOut = "`";
-            closeBlank = false;
           } else {
             out.push("");
             linePrefix = "// ";
             closeOut = "";
-            closeBlank = true;
           }
           state = "fence";
           prevEmpty = false;
@@ -122,12 +118,13 @@ function transformMarkdown(buf) {
         break;
       case "fence":
         if (isEnd(line)) {
-          if (closeOut) out.push(closeOut);
-          else if (closeBlank) out.push("");
+          out.push(closeOut);
           state = "root";
           prevEmpty = true;
+          fenceChar = "";
         } else {
-          out.push(linePrefix + line.replace(stripRe, ""));
+          const s = stripRe ? line.replace(stripRe, "") : line;
+          out.push(linePrefix + s);
           prevEmpty = false;
         }
         break;

src/md.ts

@@ -12,6 +12,20 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+// Copyright 2025 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 import { type Buffer } from 'node:buffer'
 import { bufToString } from './util.ts'
 
@@ -25,38 +39,34 @@ export function transformMarkdown(buf: Buffer | string): string {
   let prevEmpty = true
 
   let fenceChar = ''
-  let stripRe = /^/
+  let stripRe: RegExp | null = null
   let endRe = /^$/
   let linePrefix = ''
   let closeOut = ''
-  let closeBlank = false
 
-  const isEnd = (s: string) => fenceChar && endRe.test(s)
+  const isEnd = (s: string) => fenceChar !== '' && endRe.test(s)
 
   for (const line of bufToString(buf).split(/\r?\n/)) {
     switch (state) {
       case 'root': {
         const g = line.match(fenceRe)?.groups
         if (g?.fence) {
           fenceChar = g.fence[0]
-          stripRe = g.indent ? new RegExp(`^ {0,${g.indent.length}}`) : /^/
+          stripRe = g.indent ? new RegExp(`^ {0,${g.indent.length}}`) : null
           endRe = new RegExp(`^ {0,3}${fenceChar}{${g.fence.length},}[ \\t]*$`)
 
           if (g.js) {
             out.push('')
             linePrefix = ''
             closeOut = ''
-            closeBlank = true
           } else if (g.bash) {
             out.push('await $`')
             linePrefix = ''
             closeOut = '`'
-            closeBlank = false
           } else {
             out.push('')
             linePrefix = '// '
             closeOut = ''
-            closeBlank = true
           }
 
           state = 'fence'
@@ -87,12 +97,13 @@ export function transformMarkdown(buf: Buffer | string): string {
 
       case 'fence':
         if (isEnd(line)) {
-          if (closeOut) out.push(closeOut)
-          else if (closeBlank) out.push('')
+          out.push(closeOut)
           state = 'root'
           prevEmpty = true
+          fenceChar = ''
         } else {
-          out.push(linePrefix + line.replace(stripRe, ''))
+          const s = stripRe ? line.replace(stripRe, '') : line
+          out.push(linePrefix + s)
           prevEmpty = false
         }
         break