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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | const program = require('commander'); // This module is used to modify the commander code. When // an unsupported option is given, only a single-line error // is printed. Now, it will also print out the usage menu. // deletes the function in order to reimplement it delete program['unknownOption']; // reimplementing the funciton program.unknownOption = function(flag) { Iif (this._allowUnknownOption) return; console.error(); console.error(" error: unknown option `%s'", flag); console.error(); // this is the extra code added to the function this.outputHelp(); process.exit(1); }; module.exports = program; |