chore: remove all dependencies (#645)

package.json

@@ -84,10 +84,6 @@
  "typescript": "^5.0.2",
  "vitest": "^1.6.0"
  },
- "dependencies": {
- "detect-indent": "^6.1.0",
- "strip-indent": "^3.0.0"
- },
  "peerDependencies": {
  "@babel/core": "^7.10.2",
  "coffeescript": "^2.5.1",

src/modules/prepareContent.ts

@@ -1,6 +1,4 @@
-import stripIndent from 'strip-indent';
-
-// todo: could use magig-string and generate some sourcemaps 🗺
+// todo: could use magic-string and generate some sourcemaps 🗺
 export function prepareContent({
  options,
  content,
@@ -22,3 +20,27 @@ export function prepareContent({
 
  return content;
 }
+
+/** Get the shortest leading whitespace from lines in a string */
+function minIndent(s: string) {
+ const match = s.match(/^[ \t]*(?=\S)/gm);
+
+ if (!match) {
+ return 0;
+ }
+
+ return match.reduce((r, a) => Math.min(r, a.length), Infinity);
+}
+
+/** Strip leading whitespace from each line in a string */
+function stripIndent(s: string) {
+ const indent = minIndent(s);
+
+ if (indent === 0) {
+ return s;
+ }
+
+ const regex = new RegExp(`^[ \\t]{${indent}}`, 'gm');
+
+ return s.replace(regex, '');
+}

src/transformers/pug.ts

@@ -1,4 +1,3 @@
-import detectIndent from 'detect-indent';
 import pug from 'pug';
 
 import type { Transformer, Options } from '../types';
@@ -67,8 +66,8 @@ const transformer: Transformer<Options.Pug> = async ({
  ...options,
  };
 
- const { type: indentationType } = detectIndent(content);
- const input = `${GET_MIXINS(indentationType ?? 'space')}\n${content}`;
+ const spaces = guessIndentString(content);
+ const input = `${GET_MIXINS(spaces ? 'space' : 'tab')}\n${content}`;
  const compiled = pug.compile(
  input,
  pugOptions,
@@ -94,4 +93,41 @@ const transformer: Transformer<Options.Pug> = async ({
  };
 };
 
+// Sourced from `golden-fleece`
+// https://github.com/Rich-Harris/golden-fleece/blob/f2446f331640f325e13609ed99b74b6a45e755c2/src/patch.ts#L302
+function guessIndentString(str: string): number | undefined {
+ const lines = str.split('\n');
+
+ let tabs = 0;
+ let spaces = 0;
+ let minSpaces = 8;
+
+ lines.forEach((line) => {
+ const match = /^(?: +|\t+)/.exec(line);
+
+ if (!match) return;
+
+ const [whitespace] = match;
+
+ if (whitespace.length === line.length) return;
+
+ if (whitespace[0] === '\t') {
+ tabs += 1;
+ } else {
+ spaces += 1;
+ if (whitespace.length > 1 && whitespace.length < minSpaces) {
+ minSpaces = whitespace.length;
+ }
+ }
+ });
+
+ if (spaces > tabs) {
+ let result = '';
+
+ while (minSpaces--) result += ' ';
+
+ return result.length;
+ }
+}
+
 export { transformer };

src/types/modules.d.ts

@@ -1,6 +1,5 @@
 declare module 'svelte/package.json';
 declare module 'coffeescript';
-declare module 'strip-indent';
 declare module 'postcss-load-config';
 declare module 'less';
 declare module 'sorcery';