fix(compat/template): disable ES interpolation with custom 'interpolate' (toss#1527)

This behaviour is documented in Lodash examples at
https://lodash.com/docs/4.17.15#template :

```
// Use the ES template literal delimiter as an "interpolate" delimiter.
// Disable support by replacing the "interpolate" delimiter.
```

Co-authored-by: Dayong Lee <[email protected]>

Author: vbfox

src/compat/string/template.spec.ts

@@ -121,6 +121,14 @@ describe('template', () => {
     expect(template('${"{" + value + "\\}"}')(data)).toBe('{2}');
   });
 
+  it('should disable ES6 template delimiters when "interpolate" is set', () => {
+    const data = { value: 2 };
+    expect(template('1${value}3', { interpolate: /<%=([\s\S]+?)%>/g })(data)).toBe('1${value}3');
+    expect(template('${"{" + value + "\\}"}', { interpolate: /<%=([\s\S]+?)%>/g })(data)).toBe(
+      '${"{" + value + "\\}"}'
+    );
+  });
+
   it('should support the "imports" option', () => {
     const compiled = template('<%= a %>', { imports: { a: 1 } });
     expect(compiled({})).toBe('1');

src/compat/string/template.ts

@@ -25,11 +25,13 @@ function escapeString(match: string): string {
   return `\\${escapeMap.get(match)}`;
 }
 
+const defaultInterpolateRegExp = /<%=([\s\S]+?)%>/g;
+
 // Only import the necessary functions for preventing circular dependencies.(lodash-es also does this)
 export const templateSettings = {
   escape: /<%-([\s\S]+?)%>/g,
   evaluate: /<%([\s\S]+?)%>/g,
-  interpolate: /<%=([\s\S]+?)%>/g,
+  interpolate: defaultInterpolateRegExp,
   variable: '',
   imports: {
     _: {
@@ -130,7 +132,7 @@ export function template(string?: string, options?: TemplateOptions, guard?: obj
     [
       options.escape?.source ?? noMatchExp.source,
       options.interpolate?.source ?? noMatchExp.source,
-      options.interpolate ? esTemplateRegExp.source : noMatchExp.source,
+      options.interpolate === defaultInterpolateRegExp ? esTemplateRegExp.source : noMatchExp.source,
       options.evaluate?.source ?? noMatchExp.source,
       '$',
     ].join('|'),