polymer-build fails when runs analyzer first

Question

Build task fails, after PR #77 which made polymer-build to run polymer-analyzer on project.sources(). I am using nunjucks to pre-render my templates, that's why analyzer fails.

Polymer({
    is: 'my-app',
    properties: {
        page: {
            type: String,
            reflectToAttribute: true
        },
        pages: {
            type: Array,
            value: {$ pages | dump | safe $}  // fails here
        }
    }
});

My gulp task looks like:

return project.sources()
.pipe(gulpif('**/*.{html,js,json}', template.compile(Object.assign({}, metadata, resources))))
.pipe(project.splitHtml())
...

Can I disable or postpone (preferable) analyzer?

My repository: https://github.com/gdg-x/hoverboard/tree/develop

Answer 1

I have found a solution. Doesn't seem perfect but works. The build is divided into 3 steps:

Compiling with nunjucks into .temp directory basing on PolymerJson

return gulp.src([
...polymerJson.sources,
polymerJson.entrypoint 
], {base: '.'})
.pipe(gulpif(/\.(html|js|json)$/, nunjucks.compile(metadata, {
  tags: {
    variableStart: '{$',
    variableEnd: '$}'
  }
})))
.pipe(gulpif(/\.(html|js)$/, replace('bower_components', '../bower_components')))
.pipe(gulp.dest(config.tempDirectory));

Optimizing and building the project

let polymerProject = null;
console.log(`Deleting ${config.build.rootDirectory} and ${config.tempDirectory} directories...`);

del([config.build.rootDirectory, config.tempDirectory])
  .then(() => {
    console.log(`Compiling template...`);

    const compileStream = template.compile(config, polymerJson)
      .on('end', () => {
        polymerProject = new polymerBuild.PolymerProject(buildPolymerJson);
      });
    return waitFor(compileStream);
  })
  .then(() => {
    console.log(`Polymer building...`);

    const sourcesStream = polymerProject.sources()
      .pipe(polymerProject.splitHtml())
      // splitHtml doesn't split CSS https://github.com/Polymer/polymer-build/issues/32
      .pipe(gulpif(/\.js$/, uglify()))
      .pipe(gulpif(/\.(html|css)$/, cssSlam()))
      .pipe(gulpif(/\.html$/, html.minify()))
      .pipe(gulpif(/\.(png|gif|jpg|svg)$/, images.minify()))
      .pipe(polymerProject.rejoinHtml());

Don't forget to move files from build/.temp directory:

return gulp.src(`${config.build.rootDirectory}/${config.tempDirectory}/**/*`,
{base: `${config.build.rootDirectory}/${config.tempDirectory}`})
.pipe(gulpif(/\.(html|js)$/, replace('../bower_components', 'bower_components')))
.pipe(gulpif(/\.(html|js)$/, replace('/.temp', '')))
.pipe(gulp.dest(config.build.rootDirectory));

Here is full gulpfile.js