Method [customInspectSymbol]

lib/internal/debugger/inspect_repl.js:338–346

(depth, opts)

  }

  [customInspectSymbol](depth, opts) {
    const type = StringPrototypeToUpperCase(this.type[0]) +
                 StringPrototypeSlice(this.type, 1);
    const name = this.name ? `<${this.name}>` : '';
    const prefix = `${type}${name} `;
    return SideEffectFreeRegExpPrototypeSymbolReplace(/^Map /,
                                                      utilInspect(this.properties, opts),
                                                      prefix);
  }
}

function copyOwnProperties(target, source) {