Error encountered with ts-loader in the node_modules/@types directory within Webpack

After successfully compiling my project, I encountered errors when trying to run npm install and then webpack in a new directory. The errors are as follows:

ERROR in /home/nobody/myproject/server/node_modules/@types/mongodb/index.d.ts
(500,12): error TS1005: ',' expected.

ERROR in /home/nobody/myproject/server/node_modules/@types/mongodb/index.d.ts
(502,12): error TS1005: ',' expected.

ERROR in /home/nobody/myproject/server/node_modules/@types/mongodb/index.d.ts
(504,15): error TS1005: ',' expected.

ERROR in /home/nobody/myproject/server/node_modules/@types/mongodb/index.d.ts
(505,15): error TS1005: ',' expected.

ERROR in /home/nobody/myproject/server/node_modules/@types/mongodb/index.d.ts
(506,15): error TS1005: ',' expected.

ERROR in /home/nobody/myproject/server/node_modules/@types/mongodb/index.d.ts
(1002,23): error TS1005: ',' expected.

In addition to the above errors, there were around 25 other errors in the same file and some other issues in my source files.

I have excluded node_modules in my tsconfig.json, and I've also set webpack externals for packaging node_modules with a node express backend as shown below:

var nodeModules = {};
fs.readdirSync('node_modules')
    .filter(function (x) {
        return ['.bin'].indexOf(x) === -1;
    })
    .forEach(function (mod) {
        nodeModules[mod] = 'commonjs ' + mod;
    });

I'm perplexed as to why everything functions perfectly in my development directory but fails when transferred to another directory.

typescriptwebpackts-loader

Answer №1

Which version of TypeScript are you currently utilizing? The most recent Mongo .d.ts files have started implementing default type arguments, which were introduced in TypeScript 2.3. The file contains around 20+ default type arguments, which could be causing the parsing errors you're encountering.

In summary, it may be necessary to upgrade to TypeScript 2.3.

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