feat(pack): 可配置打包前是否清空输出目录

Author: yuhaoju

lib/commands/pack.js

@@ -13,12 +13,15 @@ exports.setOptions = function (optimist) {
     optimist.describe('s', '使用sourcemap');
     optimist.alias('g', 'group');
     optimist.describe('g', 'exports 分组');
+    optimist.alias('c', 'clean');
+    optimist.describe('c', '打包前清空输出目录');
 };
 
 exports.run = function (options) {
     var cwd = options.cwd,
         min = options.m || options.min || false,
         lint = options.l || options.lint || false,
+        clean = options.c || options.clean || false,
         group = options.g || options.group,
         sourcemap = options.s || options.sourcemap,
         project = this.project;
@@ -35,7 +38,8 @@ exports.run = function (options) {
     project.pack({
         lint: lint,
         min: min,
-        sourcemap: sourcemap
+        sourcemap: sourcemap,
+        clean: clean
     }, function (err, stats) {
         if (err) {
             if (err !== true) {

lib/models/Project.js

@@ -261,9 +261,11 @@ var Project = function () {
                     config.devtool = opt.sourcemap;
                 }
 
-                try {
-                    childProcess.execSync('rm -rf ' + config.output.path);
-                } catch (e) {}
+                if (opt.clean) {
+                    try {
+                        childProcess.execSync('rm -rf ' + config.output.path);
+                    } catch (e) {}
+                }
 
                 config.plugins.push(new ProgressBarPlugin());
 

src/commands/pack.js

@@ -13,12 +13,15 @@ exports.setOptions = (optimist) => {
     optimist.describe('s', '使用sourcemap');
     optimist.alias('g', 'group');
     optimist.describe('g', 'exports 分组');
+    optimist.alias('c', 'clean');
+    optimist.describe('c', '打包前清空输出目录');
 };
 
 exports.run = function (options) {
     let cwd = options.cwd,
         min = options.m || options.min || false,
         lint = options.l || options.lint || false,
+        clean = options.c || options.clean || false,
         group = options.g || options.group,
         sourcemap = options.s || options.sourcemap,
         project = this.project;
@@ -35,7 +38,8 @@ exports.run = function (options) {
     project.pack({
         lint: lint,
         min: min,
-        sourcemap: sourcemap
+        sourcemap: sourcemap,
+        clean: clean
     }, (err, stats) => {
         if (err) {
             if (err !== true) {

src/models/Project.js

@@ -232,9 +232,11 @@ class Project {
                 config.devtool = opt.sourcemap
             }
 
-            try {
-                childProcess.execSync('rm -rf ' + config.output.path);
-            } catch (e) {}
+            if(opt.clean) {
+                try {
+                    childProcess.execSync('rm -rf ' + config.output.path);
+                } catch (e) {}
+            }
 
             config.plugins.push(new ProgressBarPlugin())