Function applyOp

packages/cli/src/batch-transform.ts:502–635

(j: any, root: any, rop: ResolvedOp, source: string)

// ── Mutation application ─────────────────────────────────────────────────

function applyOp(j: any, root: any, rop: ResolvedOp, source: string): string | undefined {
  const { op, node } = rop;

  switch (op.op) {
    case "updateClass": {
      const updates: ClassNameUpdate[] = op.updates.map((u: Extract<BatchOperation, { op: "updateClass" }>["updates"][number]) => ({
        tailwindPrefix: u.tailwindPrefix,
        tailwindToken: u.tailwindToken,
        value: u.value,
        relatedPrefixes: u.relatedPrefixes,
        classPattern: u.classPattern,
        standalone: u.standalone,
      }));
      mutateClassName(j, node, updates);
      return undefined;
    }

    case "updateText": {
      if (node) {
        const boundFallback = replaceBoundStringLiteralInElement(j, root, node, op.originalText, op.newText);
        if (boundFallback) {
          return undefined;
        }

        const found = mutateTextContent(node, op.originalText, op.newText, source, op.cursorOffset, op.textAnchor);
        if (found) {
          return undefined;
        }
      }

      const fallback = replaceStringLiteralInFile(j, root, op.originalText, op.newText);
      if (fallback.replaced) {
        return undefined;
      }
      if (fallback.ambiguous) {
        return `Text "${op.originalText}" matched multiple string literals in this file; refusing ambiguous rewrite`;
      }
      return `No matching text "${op.originalText}" found in element at ${op.line}:${op.col}`;
    }

    case "reorder": {
      mutateReorder(j, root, op.fromLine, op.toLine);
      return undefined;
    }

    case "moveSpacing": {
      // Detect the right mechanism for this element
      const mechanism = detectMoveMechanism(node, op.axis);

      if (mechanism === "framer-motion") {
        return applyFramerMotionMove(node, op);
      }

      // Default: CSS translate class
      const basePrefix = op.axis === "x" ? "translate-x" : "translate-y";
      const classPattern = `^-?${basePrefix.replace(/[.*+?^${}()|[\]\\]/g, "\\$&")}(-|$)`;
      const classPatternRe = new RegExp(classPattern);