Question 1

How do I configure grunt-traceur to compile ES6 files in a folder?

Accepted Answer

In your Gruntfile, define a traceur task with files specifying cwd, src, and dest, as shown in the README example. Use options like experimental for features, and set copyRuntime if needed for the Traceur runtime.

Question 2

grunt-traceur vs babel-grunt: which should I use for ES6?

Accepted Answer

Babel-grunt is generally better due to Babel's active development, broader feature support, and better performance. Use grunt-traceur only if you're maintaining a legacy project already using Traceur or prefer its specific options.

Question 3

Does grunt-traceur support ES7 or async/await?

Accepted Answer

No, grunt-traceur is focused on ES6 transpilation via Traceur, which primarily handles ES6 features. For ES7+ features like async/await, you'd need a different tool like Babel, as Traceur's experimental flag may not cover them.

Question 4

Is grunt-traceur still maintained in 2023?

Accepted Answer

Likely not actively, as the last release shown is 0.5.0, and the README lacks recent updates. The GitHub repo may have stalled, so consider more modern alternatives for ongoing projects.

Question 5

How to handle module imports with grunt-traceur?

Accepted Answer

Use the moduleNaming options in the configuration to strip or add prefixes to module names, as detailed in the README. This helps manage how ES6 modules are transformed for ES5 compatibility.

Question 6

Can I use grunt-traceur with TypeScript or other preprocessors?

Accepted Answer

No, grunt-traceur is specifically for ES6 JavaScript transpilation. For TypeScript, you'd need a separate Grunt plugin or build step, as it doesn't integrate with other language compilers.

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