Turn off Babel's strict mode when transpiling JavaScript files

Currently, I am facing an issue while trying to transpile a set of JavaScript files using Babel. Since Babel operates in strict mode by default, it triggers a syntax error whenever there is a conflict like the use of the delete keyword. The solution I am seeking is to find a way to bypass this strict mode requirement.

Edit: Just to clarify, I understand how the delete operator functions in strict mode. My main query revolves around configuring Babel to work in a non-strict mode to avoid these errors, especially since it parses files as ES6 modules by default.

https://i.stack.imgur.com/JhOuQ.jpg

javascriptnpmbabeljs

Answer №1

I have discovered the solution. By default, Babel interprets files as ES6 modules, which are strict by default. Adding the --source-type script when using the CLI will resolve this issue. I have included a simple command below to transpile a single JS file while ignoring strict mode for future reference. It is important to note that upgrading to the latest version of Babel 7 is necessary for this to work.

babel test.js --presets=@babel/env --source-type script --out-file test_new.js

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