From 898555597c65fe91a9680cb4cf42cb9e39c8cb24 Mon Sep 17 00:00:00 2001
From: outslept <135520429+outslept@users.noreply.github.com>
Date: Sun, 26 Oct 2025 22:59:21 +0300
Subject: [PATCH] feat: migrated pad-left codemod from jscodeshift to ast-grep

---
 codemods/pad-left/index.js | 127 +++++++++++++++++++++++++------------
 1 file changed, 88 insertions(+), 39 deletions(-)

diff --git a/codemods/pad-left/index.js b/codemods/pad-left/index.js
index 05ea82b..d60e72f 100644
--- a/codemods/pad-left/index.js
+++ b/codemods/pad-left/index.js
@@ -1,9 +1,9 @@
-import jscodeshift from 'jscodeshift';
-import { removeImport } from '../shared.js';
+import { ts } from '@ast-grep/napi';
 
 /**
  * @typedef {import('../../types.js').Codemod} Codemod
  * @typedef {import('../../types.js').CodemodOptions} CodemodOptions
+ * @typedef {import('@ast-grep/napi').Edit} Edit
  */
 
 /**
@@ -11,40 +11,89 @@ import { removeImport } from '../shared.js';
  * @returns {Codemod}
  */
 export default function (options) {
-	return {
-		name: 'pad-left',
-		to: 'native',
-		transform: ({ file }) => {
-			const j = jscodeshift;
-			const root = j(file.source);
-
-			const { identifier } = removeImport('pad-left', root, j);
-			root
-				.find(j.CallExpression, {
-					callee: {
-						type: 'Identifier',
-						name: identifier,
-					},
-				})
-				.replaceWith(({ node }) => {
-					const [stringArg, ...otherArgs] = node.arguments;
-					return j.callExpression(
-						j.memberExpression(
-							j.callExpression(
-								j.memberExpression(
-									// @ts-ignore
-									j.parenthesizedExpression(stringArg),
-									j.identifier('toString'),
-								),
-								[],
-							),
-							j.identifier('padStart'),
-						),
-						[...otherArgs],
-					);
-				});
-
-			return root.toSource(options);
-		},
-	};
-}
+  return {
+    name: 'pad-left',
+    to: 'native',
+    transform: ({ file }) => {
+      const src = file.source;
+      const ast = ts.parse(src);
+      const root = ast.root();
+
+      const imports = root.findAll({
+        rule: {
+          any: [
+            { pattern: { context: "import $NAME from 'pad-left'", strictness: 'relaxed' } },
+            { pattern: { context: 'import $NAME from "pad-left"', strictness: 'relaxed' } },
+
+            { pattern: { context: "const $NAME = require('pad-left')", strictness: 'relaxed' } },
+            { pattern: { context: 'const $NAME = require("pad-left")', strictness: 'relaxed' } },
+
+            { pattern: { context: "let $NAME = require('pad-left')", strictness: 'relaxed' } },
+            { pattern: { context: 'let $NAME = require("pad-left")', strictness: 'relaxed' } },
+
+            { pattern: { context: "var $NAME = require('pad-left')", strictness: 'relaxed' } },
+            { pattern: { context: 'var $NAME = require("pad-left")', strictness: 'relaxed' } },
+          ],
+        },
+      });
+
+      /** @type {Edit[]} */
+      const edits = [];
+      /** @type {string[]} */
+      const localNames = [];
+
+      for (const imp of imports) {
+        const name = imp.getMatch('NAME')?.text();
+        if (name && !localNames.includes(name)) {
+          localNames.push(name);
+        }
+
+        const rng = imp.range();
+        let start = rng.start.index;
+        let end = rng.end.index;
+
+        const next2 = src.slice(end, end + 2);
+        if (next2 === '\r\n') {
+          end += 2;
+        } else {
+          const next1 = src[end];
+          if (next1 === '\n' || next1 === '\r') end += 1;
+        }
+
+        edits.push({ startPos: start, endPos: end, insertedText: '' });
+      }
+
+      if (localNames.length === 0) {
+        return edits.length ? root.commitEdits(edits) : file.source;
+      }
+
+      const usagePatterns = [];
+      for (const name of localNames) {
+        usagePatterns.push(
+          { pattern: `${name}($VALUE, $WIDTH, $FILL)` },
+          { pattern: `${name}($VALUE, $WIDTH)` },
+          { pattern: `${name}($VALUE)` },
+        );
+      }
+
+      const calls = root.findAll({ rule: { any: usagePatterns } });
+
+      for (const call of calls) {
+        const value = call.getMatch('VALUE');
+        if (!value) continue;
+
+        const width = call.getMatch('WIDTH');
+        const fill = call.getMatch('FILL');
+
+        const args = [];
+        if (width) args.push(width.text());
+        if (fill) args.push(fill.text());
+
+        const newText = `(${value.text()}).toString().padStart(${args.join(', ')})`;
+        edits.push(call.replace(newText));
+      }
+
+      return edits.length ? root.commitEdits(edits) : file.source;
+    },
+  };
+}
\ No newline at end of file