ra-core/src/i18n/substituteTokens.ts

Core components of react-admin, a frontend Framework for building admin applications on top of REST services, using ES6, React

/**
 * Replace tokens by their value in the given string
 *
 * @param {string} template The template with interpolation tokens, e.g. 'Hello, %{name}'
 * @param {object} data The data to interpolate, e.g. { name: 'John' }
 * @returns {string} The interpolated string, e.g. 'Hello, John'
 */
export const substituteTokens = (template, data) =>
    template && data
        ? String.prototype.replace.call(template, defaultTokenRegex, function (
              expression,
              argument
          ) {
              if (!data.hasOwnProperty(argument) || data[argument] == null) {
                  return expression;
              }
              return data[argument];
          })
        : template;

// tokens are like 'Hello, %{name}'
const defaultTokenRegex = /%\{(.*?)\}/g;