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arv avatar arv commented on June 3, 2024

We do have tests for this: https://github.com/google/traceur-compiler/blob/master/test/feature/Modules/ImportNoImportClause.js

What options are you using?
Does import {} from '...' work?

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stuartZhang avatar stuartZhang commented on June 3, 2024

The traceur command is as such:

node_modules/.bin/traceur --module=www/js/main.bbjs --out=_build/www/js/main.js --arrow-functions=true --block-binding=true --classes=true --computed-property-names=true --default-parameters=true --destructuring=true --for-of=true --generators=true --numeric-literals=true --property-methods=true --property-name-shorthand=true --rest-parameters=true --spread=true --symbols=true --template-literals=true --unicode-escape-sequences=true --unicode-expressions=true --proper-tail-calls=true --annotations=true --array-comprehension=true --async-functions=true --async-generators=true --exponentiation=true --export-from-extended=true --for-on=true --generator-comprehension=true --member-variables=true --spread-properties=true --types=true --source-maps=file

Through the above command, I'd like to compile "www/js/main.bbjs" to "_build/www/js/main.js"

In the "www/js/main.bbjs" file, a dozen of ES6 modules are imported by the ES6 module directives:

import common from './common.bbjs';
import mojioSdk from './sdk/mojio-js-3.5.1-ext.bbjs';
import nestSdk from './sdk/nest-sdk-ext.bbjs';
import artikSdk from './sdk/artik-cloud-sdk-2.0.2-ext.bbjs';
import alert from './widgets/alert.bbjs';

If the importing statement includes the import variable, the body of the imported module will be executed, even though only an empty string is exported from the target module.

In the corresponding compilation output (i.e. the ES5 file), the below statement is present:

var common = $traceurRuntime.getModule($traceurRuntime.normalizeModuleName("./common.bbjs", "../../../www/js/main.bbjs")).default;

On the contrary, if the import variable is absent (e.g. as the below) in the importing statement, the body of the imported module won't be executed and the importing statement seems to be ignored in the main module "www/js/main.bbjs" by the Google Traceur.

import './common.bbjs';
import './sdk/mojio-js-3.5.1-ext.bbjs';
import './sdk/nest-sdk-ext.bbjs';
import './sdk/artik-cloud-sdk-2.0.2-ext.bbjs';
import './widgets/alert.bbjs';

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jogboms avatar jogboms commented on June 3, 2024

Has there been a fix or solution to this?

It's currently breaking up my development flow.

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arv avatar arv commented on June 3, 2024

I'm really not sure why this isn't working for you. The following works as expected:

http://google.github.io/traceur-compiler/demo/repl.html#import%20'.%2Fgenerators.js'%3B%0A

Also, what version are you using?

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