In starting my new project, I am considering using BabelJS. However, there is a significant requirement that must be met: it needs to be compatible with IE8.
ISSUE: Babel compiles ES6 to ES5, but the support for ES5 on IE8 is lacking.
Are there any alternatives to Babel that would allow me to write object-oriented code, easily debug, and still be friendly with IE8?
If you're looking to achieve compatibility with EcmaScript 3, consider using Typescript. It allows you to build code that is compatible with EcmaScript 3.
To get started with TypeScript, simply create a basic project in Visual Studio (or VSCode/Sublime/WebStorm) and configure the tsconfig.json file as shown below:
{
"compilerOptions": {
"target": "es3",
"declaration": true,
"noImplicitAny": false,
"removeComments": true,
"noLib": false,
"emitDecoratorMetadata": true,
"sourceMap": true,
"listFiles": true,
"outDir": "",
"out": "./Compiled/myfile.js",
"experimentalDecorators": true
},
"files": [
"myfile.ts"
]
}
Best of luck on your TypeScript journey!
Babel includes a 'loose' mode for some of its transformations that results in generating code using simpler ES5 features, sacrificing some level of spec compatibility. By enabling these options and avoiding ES5-specific syntax like getters and setters, the code should still function properly in IE8.
For more information on this topic, you can refer to the caveats page.
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