14:13:13] Starting "agency:build"...

events.js:183
      throw er; // Unhandled "error" event
      ^
Error
    at new JS_Parse_Error (eval at <anonymous> (D:\0410\wenjian2\gameSystem\node_modules\_uglify-js@2.6.4@uglify-js\tools\node.js:28:1), <anonymous>:1534:18)
    at js_error (eval at <anonymous> (D:\0410\wenjian2\gameSystem\node_modules\_uglify-js@2.6.4@uglify-js\tools\node.js:28:1), <anonymous>:1542:11)
    at croak (eval at <anonymous> (D:\0410\wenjian2\gameSystem\node_modules\_uglify-js@2.6.4@uglify-js\tools\node.js:28:1), <anonymous>:2089:9)
    at token_error (eval at <anonymous> (D:\0410\wenjian2\gameSystem\node_modules\_uglify-js@2.6.4@uglify-js\tools\node.js:28:1), <anonymous>:2097:9)
    at expect_token (eval at <anonymous> (D:\0410\wenjian2\gameSystem\node_modules\_uglify-js@2.6.4@uglify-js\tools\node.js:28:1), <anonymous>:2110:9)
    at expect (eval at <anonymous> (D:\0410\wenjian2\gameSystem\node_modules\_uglify-js@2.6.4@uglify-js\tools\node.js:28:1), <anonymous>:2113:36)
    at regular_for (eval at <anonymous> (D:\0410\wenjian2\gameSystem\node_modules\_uglify-js@2.6.4@uglify-js\tools\node.js:28:1), <anonymous>:2354:9)
    at for_ (eval at <anonymous> (D:\0410\wenjian2\gameSystem\node_modules\_uglify-js@2.6.4@uglify-js\tools\node.js:28:1), <anonymous>:2350:16)
    at eval (eval at <anonymous> (D:\0410\wenjian2\gameSystem\node_modules\_uglify-js@2.6.4@uglify-js\tools\node.js:28:1), <anonymous>:2229:24)
    at eval (eval at <anonymous> (D:\0410\wenjian2\gameSystem\node_modules\_uglify-js@2.6.4@uglify-js\tools\node.js:28:1), <anonymous>:2136:24)
    

where agencySource. The following is the path, when compressing the code, an error is reported. I don"t know how to compress the code.

    gulp.task("agency:cache-templates", function() {
                    var options = {
                        removeComments: true, //HTML
                        collapseWhitespace: true, //HTML
                        collapseBooleanAttributes: false, // <input checked="true"/> ==> <input />
                        removeEmptyAttributes: true, // <input id="" /> ==> <input />
                        removeScriptTypeAttributes: true, //<script>type="text/javascript"
                        removeStyleLinkTypeAttributes: true, //<style><link>type="text/css"
                        minifyJS: true, //JS
                        minifyCSS: true //CSS
                    };
                    return gulp.src([agencySource.js.staticViews, agencySource.js.views])
                        .pipe(htmlmin(options))
                        .pipe(templateCache("app.js", {
                            root: "views",
                            module: "app"
                        }))
                        .pipe(gulp.dest(agencySource.build.cache));
                });
                
                gulp.task("agency:build", ["agency:cache-templates"], function() {
                    
                    agencySource.js.src.push(agencySource.build.cache + "/app.js");
                    return gulp.src(agencySource.js.src)
                        .pipe(ngAnnotate())
                        //.pipe(uglify())
                        .pipe(concat("app.js"))
                        .pipe(gulp.dest(agencySource.build.cache));
                });
   
   
   
    `https://www.npmjs.com/package/gulp-uglify`
   var uglifyjs = require("uglify-js"); // can be a git checkout 
                                             // or another module (such as `uglify-es` for ES6 support) 
        var composer = require("gulp-uglify/composer");
        var pump = require("pump");
         
        var minify = composer(uglifyjs, console);
         
        gulp.task("compress", function (cb) {
          // the same options as described above 
          var options = {};
         
          pump([
              gulp.src("lib/*.js"),
              minify(options),
              gulp.dest("dist")
            ],
            cb
          );
        });

bosses take a look at it for me, thank you!