packago javascript module

gulpfile.js

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+const fs = require('fs');
+const gulp = require('gulp');
+const uglify = require('gulp-uglify');
+const rename = require("gulp-rename");
+
+gulp.task('mini', () => (
+  gulp.src('script/relationship.js')
+  .pipe(gulp.dest('dist/'))
+  .pipe(uglify())    //uglify
+  .pipe(rename("relationship.min.js"))
+  .pipe(gulp.dest('dist/'))
+));