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Safari/Babel/Webpack Const declarations are not supported in strict mode


Safari/Babel/Webpack Const declarations are not supported in strict mode

By : Shreeyash Gujar
Date : November 23 2020, 09:01 AM
To fix the issue you can do You've excluded "node_modules" in babel-loader settings, so it doesn't process your external dependencies. This package you depend on probably is not tested for in-browser usage.
And, btw, babel won't replace your consts anyway unless you use "transform-es2015-block-scoping" plugin.
code :


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Uncaught SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode

Uncaught SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode


By : Ahmed Ali Mohamed
Date : March 29 2020, 07:55 AM
To fix this issue This means that you must declare strict mode by writing "use strict" at the beginning of the file or the function to use block-scope declarations.
EX:
code :
function test(){
    "use strict";
    let a = 1;
} 
Disable babel strict mode from webpack.config.js

Disable babel strict mode from webpack.config.js


By : scritchie
Date : March 29 2020, 07:55 AM
With these it helps I'll add a simple config below.
Also note that if you use ES6 syntax (like import instead of require), webpack will automatically add "use strict" as all ES6 modules are expected to be strict mode code.
code :
var config = {
    entry: {
        home: buildBundle( 'home' ),
    },
    output: {
        path: BUILD_DIR,
        filename: '[name]-bundle.js'
    },
    module : {
        loaders : [
            {
                test: /\.js?/,
                include: APP_DIR,
                use: {
                    loader: 'babel-loader',
                    options: {
                        "presets": [
                            ['es2015', {modules: false}]
                        ],
                    }
                },
                exclude: /node_modules/
            },
        ]
    },
};
Block-scoped declarations not yet supported outside strict mode

Block-scoped declarations not yet supported outside strict mode


By : Skip Floyd
Date : March 29 2020, 07:55 AM
will be helpful for those in need
I had the same problem coused by the old version of nodejs package on Ubuntu. I've just updated to 7.5 and it's working.
code :
curl -sL https://deb.nodesource.com/setup_7.x | sudo -E bash -
sudo apt-get install -y nodejs
Const declarations are not supported in strict mode on certain browsers

Const declarations are not supported in strict mode on certain browsers


By : Jose Manuel Torres
Date : March 29 2020, 07:55 AM
Hope this helps According to Can I Use this is fixed in [iOS] Safari 10, so you might be able to get away with telling people who run into this issue that their browser isn't supported, and they should update it, but that's really not a good solution.
Also, note that when twig.js hit this issue, their fix was to declare with the var keyword instead of const, so perhaps you should submit a bug report to is-in-browser about this.
SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode installing SA

SyntaxError: Block-scoped declarations (let, const, function, class) not yet supported outside strict mode installing SA


By : muzammal hassan
Date : March 29 2020, 07:55 AM
wish help you to fix your issue It is a reported bug on npm, which versions above 6.0.0 do not support Node versions under Node 6.0.0. If you run node -v there is a strong suspicion that your Node version is older than Node 6.0.0
I ran in the same difficulties by innocently upgrading npm from version 2.14.20 to the latest stable version, with NodeJS on v4.4.0. Problem is that you cannot just upgrade Node since as you mentionned, npm is totally blocked.
code :
which node #this returned /path/bin/node 
rm -r bin/node bin/node-waf include/node lib/node lib/pkgconfig/nodejs.pc share/man/man1/node.1
tar --strip-components 1 -xzf /tmp/node-v8.11.3-linux-x64.tar.gz
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