A JavaScript error occurred in the main process
Uncaught Exception:
Error: Module build failed (from ./node_modules/ts-loader/index.js):
/home/matt/github/mantis-viewer/node_modules/typescript/lib/typescript.js:139
    for (let i = startIndex ?? 0; i < array.length; i  ) {
                             ^

SyntaxError: Unexpected token '?'
    at wrapSafe (internal/modules/cjs/loader.js:915:16)
    at Module._compile (internal/modules/cjs/loader.js:963:27)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
    at Module.load (internal/modules/cjs/loader.js:863:32)
    at Function.Module._load (internal/modules/cjs/loader.js:708:14)
    at Module.require (internal/modules/cjs/loader.js:887:19)
    at require (internal/modules/cjs/helpers.js:85:18)
    at Object.<anonymous> (/home/matt/github/mantis-viewer/node_modules/ts-loader/dist/utils.js:6:20)
    at Module._compile (internal/modules/cjs/loader.js:999:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
    at ./main.ts (/home/matt/github/mantis-viewer/app/main.js:10:7)
    at /home/matt/github/mantis-viewer/app/main.js:21:43
    at Object.<anonymous> (/home/matt/github/mantis-viewer/app/main.js:23:12)
    at Module._compile (node:internal/modules/cjs/loader:1118:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1173:10)
    at Module.load (node:internal/modules/cjs/loader:988:32)
    at Module._load (node:internal/modules/cjs/loader:829:12)
    at c._load (node:electron/js2c/asar_bundle:5:13343)
    at loadApplicationPackage (/home/matt/github/mantis-viewer/node_modules/electron/dist/resources/default_app.asar/main.js:110:16)
    at Object.<anonymous> (/home/matt/github/mantis-viewer/node_modules/electron/dist/resources/default_app.asar/main.js:222:9)

npm install canvas
npm install