routie dev init since i didn't adhere to any proper guidance up until now

frontend/node_modules/eslint-plugin-perfectionist/dist/utils/range-to-diff.d.ts

@@ -0,0 +1,43 @@
+import { TSESTree } from '@typescript-eslint/types'
+import { TSESLint } from '@typescript-eslint/utils'
+/**
+ * Calculates the size of a node excluding trailing punctuation.
+ *
+ * Computes the character length of a node's text representation, automatically
+ * subtracting trailing commas or semicolons from the size. This provides a more
+ * accurate measure of the actual content size, which is useful for sorting by
+ * line length.
+ *
+ * The function is widely used across all sorting rules when the sort type is
+ * set to 'line-length', ensuring consistent size calculation that ignores
+ * syntactic punctuation.
+ *
+ * @example
+ *
+ * ```ts
+ * // Node text: "const foo = 'bar';"
+ * rangeToDiff(node, sourceCode) // Returns: 17 (18 - 1 for semicolon)
+ * ```
+ *
+ * @example
+ *
+ * ```ts
+ * // Node text: "{ name: 'John', age: 30 },"
+ * rangeToDiff(node, sourceCode) // Returns: 26 (27 - 1 for comma)
+ * ```
+ *
+ * @example
+ *
+ * ```ts
+ * // Node text: "const value = 42"
+ * rangeToDiff(node, sourceCode) // Returns: 16 (no trailing punctuation)
+ * ```
+ *
+ * @param node - AST node to measure.
+ * @param sourceCode - ESLint source code object for text extraction.
+ * @returns Character count of the node excluding trailing comma or semicolon.
+ */
+export declare function rangeToDiff(
+  node: TSESTree.Node,
+  sourceCode: TSESLint.SourceCode,
+): number