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Liferay Frontend JS Minifier

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/*
 * Copyright 2019 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.diagnostic;

import com.google.errorprone.annotations.FormatMethod;
import com.google.errorprone.annotations.FormatString;
import com.google.errorprone.annotations.MustBeClosed;
import com.google.gson.stream.JsonWriter;
import java.io.IOException;
import java.nio.file.Path;
import java.util.function.Supplier;

/**
 * A simple interface for writing to a human readable log file.
 *
 * This API is designed to be compatible with J2CL. In the future it may be worth implementing
 * this in terms of Flogger; however, at the time of
 * writing, Flogger was not J2CL compatible.
 */
public abstract class LogFile implements AutoCloseable {

  /**
   * An interface allowing streaming JSON to a LogFile via a {@link JsonWriter}
   *
   * 
Use with {@link #logJson(StreamedJsonProducer)}
   */
  public interface StreamedJsonProducer {
    public void writeJson(JsonWriter jsonWriter) throws IOException;
  }

  @MustBeClosed
  public static LogFile createOrReopen(Path file) {
    return WritingLogFile.create(file);
  }

  public static LogFile createNoOp() {
    return new NoOpLogFile();
  }

  // All subclasses are package classes.
  LogFile() {}

  public abstract LogFile log(Object value);

  public abstract LogFile log(String value); // Provides a disambiguating overload.

  public abstract LogFile log(Supplier value);

  @FormatMethod
  public abstract LogFile log(@FormatString String template, Object... values);

  public abstract LogFile logJson(Object value);

  public abstract LogFile logJson(Supplier