fix(evaluators): fix number lead key in variable path (#1976)

packages/core/evaluators/src/server/__tests__/index.test.ts

@@ -54,4 +54,9 @@ describe('evaluate', () => {
     const result = mathEval('{{a.1}}', { a: { 1: 1 } });
     expect(result).toBe(1);
   });
+
+  it('number lead string path to object member (formula.js)', () => {
+    const result = formulaEval('{{a.1a}}', { a: { '1a': 1 } });
+    expect(result).toBe(1);
+  });
 });

packages/core/evaluators/src/utils/index.ts

@@ -23,7 +23,7 @@ function replaceNumberIndex(path: string, scope: Scope): string {
 
   for (let i = 0; i < segments.length; i++) {
     const p = segments[i];
-    if (p.match(/^\d+$/)) {
+    if (p[0] && '0123456789'.indexOf(p[0]) > -1) {
       paths.push(Array.isArray(get(scope, segments.slice(0, i))) ? `[${p}]` : `["${p}"]`);
     } else {
       if (i) {