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mc_test/node_modules/roarr/dist/factories/createMockLogger.js.flow

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+// @flow
+
+import {
+  logLevels,
+} from '../constants';
+import type {
+  LoggerType,
+  MessageContextType,
+  MessageEventHandlerType,
+  TranslateMessageFunctionType,
+} from '../types';
+
+const createMockLogger = (onMessage: MessageEventHandlerType, parentContext?: MessageContextType): LoggerType => {
+  // eslint-disable-next-line id-length, unicorn/prevent-abbreviations, no-unused-vars
+  const log = (a, b, c, d, e, f, g, h, i, k) => {
+    //
+  };
+
+  log.adopt = async (routine) => {
+    return routine();
+  };
+
+  // eslint-disable-next-line no-unused-vars
+  log.child = (context: TranslateMessageFunctionType | MessageContextType): LoggerType => {
+    return createMockLogger(onMessage, parentContext);
+  };
+
+  log.getContext = (): MessageContextType => {
+    return {};
+  };
+
+  for (const logLevel of Object.keys(logLevels)) {
+    // eslint-disable-next-line id-length, unicorn/prevent-abbreviations
+    log[logLevel] = (a, b, c, d, e, f, g, h, i, k) => {
+      return log.child({
+        logLevel: logLevels[logLevel],
+      })(a, b, c, d, e, f, g, h, i, k);
+    };
+  }
+
+  // @see https://github.com/facebook/flow/issues/6705
+  // $FlowFixMe
+  return log;
+};
+
+export default createMockLogger;