Webpack/Angular CLI - how to embed scripts in HTML instead of referencing them?

问题

I'm building a lean Angular app that should be ran locally through file:// URL. The index.html file will be attached and deployed through a headless browser and I cannot use a HTTP server as a solution. Running the file locally would bring up Cross Origin errors as described here.

The solution I came up with, which works (!) is to replace all <script src="..."/> resources (which are bundled with ng build --prod) with <script>...</script>. At the moment, I'm doing it manually.

With the output index.html from my ng build being:

<script src="runtime-es2015.1eba213af0b233498d9d.js" type="module"></script><script src="runtime-es5.1eba213af0b233498d9d.js" nomodule defer></script><script src="polyfills-es5.9e286f6d9247438cbb02.js" nomodule defer></script><script src="polyfills-es2015.690002c25ea8557bb4b0.js" type="module"></script><script src="main-es2015.3bdd714db04c3d863447.js" type="module"></script><script src="main-es5.3bdd714db04c3d863447.js" nomodule defer></script>

I'm changing it to:

<script type="module">//content of runtime-es2015.1eba213af0b233498d9d.js//</script><script nomodule defer>//content of runtime-es5.1eba213af0b233498d9d.js//</script><script nomodule defer>//content of polyfills-es5.9e286f6d9247438cbb02.js//</script><script type="module">//content of polyfills-es2015.690002c25ea8557bb4b0.js//</script><script type="module">//content of main-es2015.3bdd714db04c3d863447.js//</script><script nomodule defer>//content of main-es5.3bdd714db04c3d863447.js//</script>

I'm looking for a way to automate it through the build script.

Thanks.

回答1:

This is the solution I eventually came up with with gulp:

I've ran npm install --save-dev to packages gulp, gulp-inline and del.

After creating a gulpfile.js to the root directory, I've wrote the following code:

let gulp = require('gulp');
let inline = require('gulp-inline');
let del = require('del');

gulp.task('inline', function (done) {
    gulp.src('dist/index.html')
    .pipe(inline({
        base: 'dist/',
        disabledTypes: 'css, svg, img'
    }))
    .pipe(gulp.dest('dist/').on('finish', function(){
        done()
    }));
});

gulp.task('clean', function (done) {
    del(['dist/*.js'])
    done()
});

gulp.task('bundle-for-local', gulp.series('inline', 'clean'))

The task inline will replace all <script src="..."></script> with the corresponding file content. clean would then delete all of the .js files.

Finally, I've updated my package.json with a new build script:

"scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "build-for-local": "ng build --prod --aot && gulp bundle-for-local",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },

Now npm run build-for-local will do the work.

来源：https://stackoverflow.com/questions/61590980/webpack-angular-cli-how-to-embed-scripts-in-html-instead-of-referencing-them

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angular

Webpack

angular-cli