Code coverage report for core/src/log/log-config.ts

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import {MessageTemplate, templateString} from './message-template';
import {Interceptor} from './interceptor';
import {Context} from './context';
import {LogLevel} from './LogLevel';
import {MessageFormat} from './message-format';
 
 
export type LogConfigOptions = {
  rootLevel?: LogLevel;
  messageTemplate?: MessageTemplate;
  messageFormat?: MessageFormat;
  interceptors?: Interceptor[];
  contextSupplier?: Context;
};
 
export class LogConfig {
  constructor(
    public readonly rootLevel: LogLevel = LogLevel.INFO,
    public readonly messageTemplate: MessageTemplate = templateString(),
    public readonly interceptors: Interceptor[] = [],
    public readonly contextSupplier: Context = (): any => ({}),
    public readonly messageFormat?: MessageFormat
  ) {
  }
 
  static create(props: LogConfigOptions = {}): LogConfig {
    return new LogConfig(props.rootLevel, props.messageTemplate, props.interceptors, props.contextSupplier, props.messageFormat);
  }
 
  extend(props: LogConfigOptions, merge = false): LogConfig {
 
    props.rootLevel = props.rootLevel || this.rootLevel;
    props.messageTemplate = props.messageTemplate || this.messageTemplate;
    props.messageFormat = props.messageFormat || this.messageFormat;
 
    let _contextSupplier: Context;
    let _interceptors: Interceptor[];
    if (merge) {
      if (props.contextSupplier !== undefined) {
        _contextSupplier = (): any => {
          return {
            ...this.contextSupplier(),
            ...props.contextSupplier ? props.contextSupplier() : {},
          }
        }
      } else {
        _contextSupplier = this.contextSupplier;
      }
      if (props.interceptors) {
        _interceptors = [
          ...this.interceptors,
          ...props.interceptors
        ];
      } else {
        _interceptors = [...this.interceptors];
      }
    } else {
      _interceptors = props.interceptors || [...this.interceptors];
      _contextSupplier = props.contextSupplier || this.contextSupplier;
    }
    return new LogConfig(props.rootLevel, props.messageTemplate, _interceptors, _contextSupplier, props.messageFormat);
  }
}