ember-hbs-imports

This addon allows you to use import-style syntax to create local bindings to a helper/component and import styles within a template file.

• More concise invocations while making it explicit where it comes from
• No hyphens needed!
• Relative imports!

there is now an official addon for imports at https://github.com/ember-template-imports/ember-template-imports

Installation

ember install ember-hbs-imports

Usage

Use the same kind of import syntax you are familiar with from Javascript:

Syntax:

• import "{ named }" from "my-helpers"
• import "{ * as named }" from "my-helpers"
• import a from 'x': will use helper/component from 'x'
• import * as b from 'x': will user helper/component from path 'x/<b.*>'
• import style from 'x.scoped.scss': import scss and replace content in template

{{import "{ fn }" from "@ember/helper"}}
{{import myHelper from 'ui/helper'}}
{{import my-mod from 'ui/modifiers'}}
{{import style from './styles.module.scss'}}
{{import BasicDropdown from 'ember-basic-dropdown/components/basic-dropdown'}}
{{import SameDropdown from 'ember-basic-dropdown/components/basic-dropdown'}}


{{import helper as ashelper from "ui/helpers" }}
{{import a as ahelper from "ui/helpers" }}
{{import "* as helpers" from "u/helpersi" }}
{{import "a, b" from "ui/helpers" }}
{{import "a as x, b as y" from "ui/helpers" }}
{{import "a as z, helper" from "ui/helpers" }}


{{myHelper 'a'}}
{{helpers.x 'a'}}

<BasicDropdown class={{style.myclass}} />
<SameDropdown @param={{style.myclass}} />

<a {{my-mod}} />

The helper is looked up from the given string using a direct lookup pattern. I set the resolveHelper in the resolver. All this addon does is taking that {{import ...}} statement and replacing all helper invocations with {{ember-hbs-import/helpers/invoke-helper 'myHelper' ...}}.

Our helper then looks up the actual helper and calls compute with the other arguments

Embroider Support

to also have style imports working you need to add following to the embroider packagerOptions. this will prefix the styles with a specific hash, which is the same ember-hbs-imports will use in the templates.

const spark_md5 = require('spark-md5');
...
packagerOptions: {
      webpackConfig: {
        module: {
          rules: [
            {
              test: /app\/styles\/app.scss$/i,
              use: [
                { loader: 'style-loader' },
                { loader: 'css-loader', options: {
                    modules: {
                      mode: 'global',
                    }
                  } },
                { loader: 'sass-loader' }
              ],
            },
            {
              test: /\.module\.scss$/i,
              use: [
                { loader: 'style-loader' },
                { loader: 'css-loader', options: {
                    modules: {
                      mode: 'local',
                      getLocalIdent(context, localIdentName, localName) {
                        const name = localName;
                        let namespace = context.resourcePath.split('node_modules').slice(-1)[0];
                        if (namespace.startsWith('@')) {
                          namespace = namespace.split('/').slice(0, 2).join('/');
                        } else {
                          namespace = namespace.split('/')[0];
                        }
                        let relativePath = context.resourcePath;
                        relativePath = relativePath.replace(/\\/g, '/');
                        const prefix = context.context;
                        const hashKey = `${namespace}_${prefix}_${name}`;
                        return `${namespace}_${prefix}_${name}_${spark_md5.hash(hashKey).slice(0, 5)}`;
                      }
                    }
                  } },
                { loader: 'sass-loader' }
              ],
            },
          ],
        },
      }
    }

Glint Support

• use glint/core tgz from https://github.com/patricklx/glint/releases
• use ember-hbs-imports as glint environment, remove ember-loose.
• make sure that there is an import for every values or dont use imports at all

Template Lint Support

• add plugin "ember-hbs-imports/hbs-imports-rule" to your .template-lintrc.js
• enable or disable rule 'must-have-hbs-imports': true

Motivation

ember-template-component-import already gives us import for components, but I really miss the helper imports. So I went ahead and added this functionality :)

License

This project is licensed under the MIT License.