[英]Yeoman / grunt .readJSON()
I'm sure I've missed something simple but can anyone explain why this.src.copy happens after this.dest.readJSON here: 我敢肯定我错过了一些简单的东西,但是谁能解释为什么this.dest.readJSON之后发生this.src.copy:
var yeoman = require('yeoman-generator')
, TestGenerator
TestGenerator = yeoman.generators.Base.extend(
{ writing: function () {
this.src.copy('package.json', 'package.json')
this.pkg = this.dest.readJSON('package.json')
}
}
)
module.exports = TestGenerator
Resulting in the following error: 导致以下错误:
/tmp/test/node_modules/yeoman-generator/node_modules/file-utils/lib/file.js:252
throw new Error('Unable to read "' + filepath + '" file (Error code: ' + e
^
Error: Unable to read "/tmp/test-run/package.json" file (Error code: ENOENT).
at Env.File.read (/tmp/test/node_modules/yeoman-generator/node_modules/file-utils/lib/file.js:252:11)
at Env.(anonymous function) [as read] (/tmp/test/node_modules/yeoman-generator/node_modules/file-utils/lib/env.js:24:41)
at Env.File.readJSON (/tmp/test/node_modules/yeoman-generator/node_modules/file-utils/lib/file.js:258:18)
at Env.(anonymous function) [as readJSON] (/tmp/test/node_modules/yeoman-generator/node_modules/file-utils/lib/env.js:24:41)
at yeoman.generators.Base.extend.writing (/tmp/test/jim/index.js:7:28)
at /tmp/test/node_modules/yeoman-generator/lib/base.js:381:14
at processImmediate [as _immediateCallback] (timers.js:336:15)
I can't find anything in either of the docs to say these functions aren't synchronous: 我在两个文档中都找不到任何内容来说明这些功能不同步:
http://gruntjs.com/api/grunt.file https://github.com/SBoudrias/file-utils http://gruntjs.com/api/grunt.file https://github.com/SBoudrias/file-utils
Looks like there might be some async code running in the write part of the copying: 看起来在复制的写部分中可能正在运行一些异步代码:
https://github.com/SBoudrias/file-utils/blob/master/lib/env.js#L129 https://github.com/SBoudrias/file-utils/blob/master/lib/env.js#L129
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