Can a Regular String Be Converted to a Template Literal in JavaScript Without `eval` or `new Function`?

Converting a String to a Template String

Can a usual string be converted to a template string, eliminating the need for dynamic code generation techniques like eval or new Function?

Answer:

Yes, in ES6, a custom method can be added to the String prototype:

String.prototype.interpolate = function(params) {
  const names = Object.keys(params);
  const vals = Object.values(params);
  return new Function(...names, `return \`${this}\`;`)(...vals);
}

const template = 'Example text: ${text}';
const result = template.interpolate({
  text: 'Foo Boo'
});
console.log(result);

This method takes an object as an argument, where keys represent template string variables and values are their replacements. It creates a new function that returns the interpolated template string and executes it with the provided values.

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