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Template Strings

Template strings allow string interpolation using backtick syntax. They must be enabled with the enableTemplateStrings option.

Enabling Template Strings​

const options = { enableTemplateStrings: true };

evaluateExpression('`Hello, ${name}!`', { name: 'Alice' }, options);
// "Hello, Alice!"

Syntax​

Template strings are enclosed in backticks and can embed expressions using ${...}:

`Hello, ${name}!`
`The result is ${2 + 3}`
`${firstName} ${lastName}`

Embedded Expressions​

Any valid expression can appear inside ${}:

`Total: ${price * quantity}`
`Status: ${score >= 90 ? "Pass" : "Fail"}`
`Items: ${length(items)}`

Multi-Part Templates​

Templates can mix static text and multiple interpolations:

`${user.name} is ${user.age} years old and lives in ${user.city}`

Example​

import { evaluateExpression } from '@taioncom/taion-expression';

const context = {
  user: { name: 'Alice', age: 30 },
  items: ['apple', 'banana'],
};

const options = { enableTemplateStrings: true };

const result = evaluateExpression(
  '`${user.name} has ${length(items)} items`',
  context,
  options
);

console.log(result.result); // "Alice has 2 items"