WARNING: Your build is slower because some babel plugins are non-serializable []

Building into /private/var/folders/6y/_8qpkt114jzb442txt_9w_2c0000gn/T/embroider-cjbPbI
WARNING: Your build is slower because some babel plugins are non-serializable []

I suppose the above warning was supposed to include the names of the plugins that are not serializable, but apparently this was not the case. Is there another way to find out what went wrong here?

[ef4]

Some of this is self-inflicted right now, because some of our own AST transforms are not serializable. (AST transforms are not babel plugins, but they do need to run inside the inline-hbs babel plugin, so their serializability matters.)

We definitely need a better message here though, because even once we fix our own there will still be cases where users have non-serializable plugins.

One way to check what is causing the problem is to inspect _babel_config_.js and _template_compiler_.js in the intermediate build directory (the directory name prints on the console as “Building into…” at the start of the build). Anything in those files that says:

{
  "embroiderPlaceholder": true,
  "type": "global",
}

is encoding a non-serializable value.

[villander]

I’m using ember-cli 3.9.0 with "ember-cli-template-lint": "^1.0.0-beta.1"

follow my package.json

{
  "name": "web-app",
  "version": "2.12.0",
  "main": "app/index.html",
  "private": true,
  "description": "Ember front-end for Company",
  "repository": "[e-mail]:my-company/web_app.git",
  "license": "MIT",
  "author": "Engineering @ MyCompany <[e-mail]>",
  "directories": {
    "doc": "doc",
    "test": "tests"
  },
  "scripts": {
    "build": "ember build",
    "changelog": "lerna-changelog",
    "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",
    "@embroider/compat": "^0.3.4",
    "@embroider/core": "^0.3.4",
    "@embroider/router": "^0.3.4",
    "@embroider/webpack": "^0.3.4",
    "@paycertify/assets": "0.0.44",
    "awesomplete": "^1.1.2",
    "broccoli-asset-rev": "^2.7.0",
    "country-region-selector": "^0.4.1",
    "ember-ace": "^2.0.1",
    "ember-ajax": "^5.0.0",
    "ember-auto-import": "^1.2.13",
    "ember-cli": "~3.9.0",
    "ember-cli-app-version": "^3.2.0",
    "ember-cli-babel": "^7.1.2",
    "ember-cli-code-coverage": "^1.0.0-beta.8",
    "ember-cli-dependency-checker": "^3.1.0",
    "ember-cli-deploy": "^1.0.2",
    "ember-cli-deploy-build": "^1.1.1",
    "ember-cli-deploy-revision-data": "^1.0.0",
    "ember-cli-deploy-scp": "^1.0.12",
    "ember-cli-deploy-sentry": "^0.6.0",
    "ember-cli-dotenv": "^2.0.0",
    "ember-cli-eslint": "^4.2.3",
    "ember-cli-head": "^0.4.1",
    "ember-cli-htmlbars": "^3.0.0",
    "ember-cli-htmlbars-inline-precompile": "^1.0.3",
    "ember-cli-inject-live-reload": "^1.8.2",
    "ember-cli-mirage": "^0.4.15",
    "ember-cli-moment-shim": "^3.5.0",
    "ember-cli-sass": "^7.1.4",
    "ember-cli-sentry": "^4.0.0",
    "ember-cli-sri": "^2.1.1",
    "ember-cli-template-lint": "^1.0.0-beta.1",
    "ember-cli-tooltipster": "^0.10.0",
    "ember-cli-uglify": "^2.1.0",
    "ember-concurrency": "^0.8.27",
    "ember-data": "~3.9.0",
    "ember-export-application-global": "^2.0.0",
    "ember-flatpickr": "^2.6.1",
    "ember-i18n": "^5.3.0",
    "ember-load-initializers": "^1.1.0",
    "ember-maybe-import-regenerator": "^0.1.6",
    "ember-metrics": "^0.13.0",
    "ember-moment": "^7.6.0",
    "ember-qunit": "^3.4.1",
    "ember-resolver": "^5.0.1",
    "ember-simple-auth": "^1.7.0",
    "ember-source": "~3.9.0",
    "ember-test-selectors": "^1.0.0",
    "ember-truth-helpers": "^2.0.0",
    "ember-window-mock": "^0.5.3",
    "eslint-plugin-ember": "^5.2.0",
    "flag-icon-css": "^3.0.0",
    "highcharts": "^6.0.6",
    "lerna-changelog": "^0.8.2",
    "loader.js": "^4.7.0",
    "print-this": "^1.14.1",
    "qunit-dom": "^0.8.4",
    "sinon": "^7.2.3",
    "tooltipster": "^4.2.5",
    "webpack-bundle-analyzer": "^3.3.2",
    "yuidoc-ember-theme": "^2.0.1"
  },
  "engines": {
    "node": "6.* || 8.* || >= 10.*"
  },
  "changelog": {
    "repo": "my-company/web_app",
    "labels": {
      "breaking": ":boom: Breaking Change",
      "enhancement": ":rocket: Enhancement",
      "bug": ":bug: Bug Fix",
      "documentation": ":memo: Documentation",
      "internal": ":house: Internal"
    }
  }
}