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Closure Compiler is a JavaScript optimizing compiler. It parses your JavaScript, analyzes it, removes dead code and rewrites and minimizes what's left. It also checks syntax, variable references, and types, and warns about common JavaScript pitfalls. It is used in many of Google's JavaScript apps, including Gmail, Google Web Search, Google Maps, and Google Docs. This binary checks for style issues such as incorrect or missing JSDoc usage, and missing goog.require() statements. It does not do more advanced checks such as typechecking.

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/*
 * Copyright 2018 The Closure Compiler Authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.javascript.jscomp;

/** Common errors for Closure primitives that are reported in multiple passses. */
final class ClosurePrimitiveErrors {

  private ClosurePrimitiveErrors() {}

  static final DiagnosticType DUPLICATE_MODULE =
      DiagnosticType.error(
          "JSC_DUPLICATE_MODULE",
          "Duplicate module: {0}. Module already declared in other file {1}");

  static final DiagnosticType DUPLICATE_NAMESPACE =
      DiagnosticType.error(
          "JSC_DUPLICATE_NAMESPACE",
          "Duplicate namespace: {0}. Namespace already provided in other file {1}");

  static final DiagnosticType INVALID_DESTRUCTURING_FORWARD_DECLARE =
      DiagnosticType.error(
          "JSC_INVALID_DESTRUCTURING_FORWARD_DECLARE",
          "Cannot destructure a forward-declared type");

  static final DiagnosticType MODULE_USES_GOOG_MODULE_GET =
      DiagnosticType.error(
          "JSC_MODULE_USES_GOOG_MODULE_GET",
          "It's illegal to use a 'goog.module.get' at the module top-level."
              + " Did you mean to use goog.require instead?");

  static final DiagnosticType INVALID_FORWARD_DECLARE_NAMESPACE =
      DiagnosticType.error(
          "JSC_GOOG_MODULE_INVALID_FORWARD_DECLARE_NAMESPACE",
          "goog.forwardDeclare parameter must be a string literal.");

  static final DiagnosticType INVALID_GET_NAMESPACE =
      DiagnosticType.error(
          "JSC_GOOG_MODULE_INVALID_GET_NAMESPACE",
          "goog.module.get parameter must be a string literal.");

  static final DiagnosticType INVALID_REQUIRE_NAMESPACE =
      DiagnosticType.error(
          "JSC_GOOG_MODULE_INVALID_REQUIRE_NAMESPACE",
          "goog.require parameter must be a string literal.");

  static final DiagnosticType INVALID_REQUIRE_TYPE_NAMESPACE =
      DiagnosticType.error(
          "JSC_GOOG_MODULE_INVALID_REQUIRE_TYPE_NAMESPACE",
          "goog.requireType parameter must be a string literal.");

  static final DiagnosticType MISSING_MODULE_OR_PROVIDE =
      DiagnosticType.error(
          "JSC_MISSING_MODULE_OR_PROVIDE", "Required namespace \"{0}\" never defined.");

  static final DiagnosticType MISSING_MODULE_OR_PROVIDE_FOR_FORWARD_DECLARE =
      DiagnosticType.error(
          "JSC_MISSING_MODULE_OR_PROVIDE_FOR_FORWARD_DECLARE",
          "Required namespace \"{0}\" never defined.");

  static final DiagnosticType INVALID_GET_CALL_SCOPE =
      DiagnosticType.error(
          "JSC_GOOG_MODULE_INVALID_GET_CALL_SCOPE",
          "goog.module.get can not be called in global scope.");

  static final DiagnosticType INVALID_CLOSURE_CALL_SCOPE_ERROR =
      DiagnosticType.error(
          "JSC_INVALID_CLOSURE_CALL_ERROR",
          "Closure primitive methods (goog.provide, goog.require, goog.define, etc) must be called "
              + " at file scope.");
}