Function template

lib/handlebars/runtime.js:49–306

(templateSpec, env)

}

export function template(templateSpec, env) {
  /* istanbul ignore next */
  if (!env) {
    throw new Exception('No environment passed to template');
  }
  if (!templateSpec || !templateSpec.main) {
    throw new Exception('Unknown template object: ' + typeof templateSpec);
  }

  templateSpec.main.decorator = templateSpec.main_d;

  // Note: Using env.VM references rather than local var references throughout this section to allow
  // for external users to override these as pseudo-supported APIs.
  env.VM.checkRevision(templateSpec.compiler);

  // backwards compatibility for precompiled templates with compiler-version 7 (<4.3.0)
  const templateWasPrecompiledWithCompilerV7 =
    templateSpec.compiler && templateSpec.compiler[0] === 7;

  function invokePartialWrapper(partial, context, options) {
    if (options.hash) {
      context = Utils.extend({}, context, options.hash);
      if (options.ids) {
        options.ids[0] = true;
      }
    }
    partial = env.VM.resolvePartial.call(this, partial, context, options);

    options.hooks = this.hooks;
    options.protoAccessControl = this.protoAccessControl;

    let result = env.VM.invokePartial.call(this, partial, context, options);

    if (result == null && env.compile) {
      options.partials[options.name] = env.compile(
        partial,
        templateSpec.compilerOptions,
        env
      );
      result = options.partials[options.name](context, options);
    }
    if (result != null) {
      if (options.indent) {
        let lines = result.split('\n');
        for (let i = 0, l = lines.length; i < l; i++) {
          if (!lines[i] && i + 1 === l) {
            break;
          }

          lines[i] = options.indent + lines[i];
        }
        result = lines.join('\n');
      }
      return result;
    } else {
      throw new Exception(
        'The partial ' +
          options.name +