在花时间解决此问题之前，请先阅读下面标题为“ It Works”的更新。
我已经构建了一个Ember（3.4）应用程序，该应用程序使用了Ember Fastboot。
它使用“灰烬服务”在本地构建并运行正常。
然后我将其部署到Heroku。它构建良好，但是当尝试访问它时，Heroku日志包含以下内容：
2018-10-26T10:59:25.887108+00:00 app[web.1]: Error: Couldn't find /app/dist/package.json. You may need to update your version of ember-cli-fastboot.
2018-10-26T10:59:25.887110+00:00 app[web.1]: at EmberApp.readPackageJSON (/app/node_modules/fastboot/src/ember-app.js:350:13)
2018-10-26T10:59:25.887112+00:00 app[web.1]: at new EmberApp (/app/node_modules/fastboot/src/ember-app.js:34:23)
2018-10-26T10:59:25.887114+00:00 app[web.1]: at FastBoot._buildEmberApp (/app/node_modules/fastboot/src/index.js:114:17)
2018-10-26T10:59:25.887115+00:00 app[web.1]: at new FastBoot (/app/node_modules/fastboot/src/index.js:52:10)
2018-10-26T10:59:25.887117+00:00 app[web.1]: at Worker.buildMiddleware (/app/node_modules/fastboot-app-server/src/worker.js:74:21)
2018-10-26T10:59:25.887118+00:00 app[web.1]: at Worker.start (/app/node_modules/fastboot-app-server/src/worker.js:48:30)
2018-10-26T10:59:25.887120+00:00 app[web.1]: at new FastBootAppServer (/app/node_modules/fastboot-app-server/src/fastboot-app-server.js:53:19)
2018-10-26T10:59:25.887122+00:00 app[web.1]: at Object.<anonymous> (/app/serve.js:3:14)
2018-10-26T10:59:25.887124+00:00 app[web.1]: at Module._compile (internal/modules/cjs/loader.js:688:30)
2018-10-26T10:59:25.887125+00:00 app[web.1]: at Object.Module._extensions..js (internal/modules/cjs/loader.js:699:10)
2018-10-26T10:59:25.897530+00:00 app[web.1]: [2018-10-26T10:59:25.897Z][m4] forked worker 4029
2018-10-26T10:59:25.897719+00:00 app[web.1]: [2018-10-26T10:59:25.897Z][m4] worker online
2018-10-26T10:59:25.898240+00:00 app[web.1]: [2018-10-26T10:59:25.898Z][m4] worker exited with error code: 1
2018-10-26T10:59:25.922787+00:00 app[web.1]: Error waiting for process to terminate: No child processes
所以我在这里注意到的第一件事是它正在一个令人惊讶的地方寻找package.json。如果我在Heroku上浏览组成应用程序的文件，它们将像这样：
$ heroku run bash
Running bash on ? aaaaa-bbbbbb-99999... up, run.8888 (Free)
~ $ ls -l
total 628
-rw------- 1 u12345 dyno 19 Oct 26 10:01 Procfile
-rw------- 1 u12345 dyno 1453 Oct 26 10:01 README.md
drwx------ 9 u12345 dyno 4096 Oct 26 10:01 app
drwx------ 2 u12345 dyno 4096 Oct 26 10:01 config
-rw------- 1 u12345 dyno 1004 Oct 26 10:01 ember-cli-build.js
drwx------ 116 u12345 dyno 4096 Oct 26 10:02 node_modules
-rw------- 1 u12345 dyno 591407 Oct 26 10:02 package-lock.json
-rw------- 1 u12345 dyno 1815 Oct 26 10:01 package.json
drwx------ 2 u12345 dyno 4096 Oct 26 10:01 public
-rw------- 1 u12345 dyno 464 Oct 26 10:01 serve.js
-rw------- 1 u12345 dyno 581 Oct 26 10:01 testem.js
drwx------ 5 u12345 dyno 4096 Oct 26 10:01 tests
drwx------ 2 u12345 dyno 4096 Oct 26 10:01 vendor
日志显示heroku认为package.json将位于dist目录中，但实际上它位于根目录中。
我想我在准备将应用程序部署到Heroku时做错了什么-谁能告诉我为什么我看到此错误？
以下是一些可能相关的文件的内容
Procfile
web: node serve.js
ember-cli-build.js
'use strict';
const EmberApp = require('ember-cli/lib/broccoli/ember-app');
module.exports = function(defaults) {
let app = new EmberApp(defaults, {
'asset-cache': {
include: [
'assets/**/*',
'ember-welcome-page/images/*'
]
},
'esw-cache-fallback': {
patterns: [ '/' ],
version: '1' // Changing the version will bust the cache
}
});
// Use `app.import` to add additional libraries to the generated
// output files.
//
// If you need to use different assets in different
// environments, specify an object as the first parameter. That
// object's keys should be the environment name and the values
// should be the asset to use in that environment.
//
// If the library that you are including contains AMD or ES6
// modules that you would like to import into your application
// please specify an object with the list of modules as keys
// along with the exports of each module as its value.
return app.toTree();
};
serve.js
const FastBootAppServer = require('fastboot-app-server');
let server = new FastBootAppServer({
distPath: 'dist',
gzip: true, // Optional - Enables gzip compression.
beforeMiddleware(app) {
app.use((request, response, next) => {
if (request.headers['x-forwarded-proto'] === 'https') {
return next();
} else {
return response.redirect(301, `https://${request.hostname}${request.url}`);
}
});
}
});
package.json
{
"name": "my-pwa",
"version": "0.0.0",
"private": true,
"description": "Small description for my-pwa goes here",
"repository": "",
"license": "MIT",
"author": "",
"directories": {
"doc": "doc",
"test": "tests"
},
"scripts": {
"build": "ember build",
"lint:hbs": "ember-template-lint .",
"lint:js": "eslint .",
"start": "ember serve",
"test": "ember test"
},
"devDependencies": {
"@ember/jquery": "^0.5.2",
"@ember/optional-features": "^0.6.3",
"broccoli-asset-rev": "^2.7.0",
"ember-ajax": "^3.1.0",
"ember-cli": "~3.4.3",
"ember-cli-app-version": "^3.2.0",
"ember-cli-babel": "^6.16.0",
"ember-cli-dependency-checker": "^3.0.0",
"ember-cli-eslint": "^4.2.3",
"ember-cli-fastboot": "^2.0.0",
"ember-cli-htmlbars": "^3.0.0",
"ember-cli-htmlbars-inline-precompile": "^1.0.3",
"ember-cli-inject-live-reload": "^1.8.2",
"ember-cli-qunit": "^4.3.2",
"ember-cli-sass": "^8.0.1",
"ember-cli-sri": "^2.1.1",
"ember-cli-template-lint": "^1.0.0-beta.1",
"ember-cli-uglify": "^2.1.0",
"ember-data": "~3.4.0",
"ember-export-application-global": "^2.0.0",
"ember-load-initializers": "^1.1.0",
"ember-maybe-import-regenerator": "^0.1.6",
"ember-paper": "^1.0.0-beta.18",
"ember-resolver": "^5.0.1",
"ember-service-worker": "^0.7.0",
"ember-service-worker-asset-cache": "^0.6.3",
"ember-service-worker-cache-fallback": "^0.6.1",
"ember-source": "~3.4.0",
"ember-web-app": "^2.3.0",
"ember-welcome-page": "^3.2.0",
"eslint-plugin-ember": "^5.2.0",
"loader.js": "^4.7.0",
"qunit-dom": "^0.7.1",
"sass": "^1.14.3"
},
"engines": {
"node": "6.* || 8.* || >= 10.*"
},
"dependencies": {
"fastboot-app-server": "^1.1.2-beta.1"
}
}
有效
我很高兴地说这现在正在工作。我不太高兴地说我不确定为什么。
出于特殊原因，我决定对应用程序进行一些外观上的更改，以查看是否可以让Heroku对其进行重建。我只更改了模板中的文字。
然后我做了：
ember build； ember serve -e production确认它在本地工作git push heroku master 经过大量的处理（我的印象比我以前看到的要多，但是我不确定），该过程完成了，该应用程序现在可以在Heroku上托管了。
这不是一个非常令人满意的情况，因为我不确定是什么原因导致它起作用，但是也许这可以给陷入同样情况的其他人带来希望。