manifest.json

{
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    "version": "1.1.0",
    "manifest_version": 3,
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        "webNavigation"
    ],
    "content_scripts": [
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            ],
            "js": [
                "js/integrantes-viewer.js",
                "js/element-hider.js"
            ],
            "css": [
                "css/tu-cursos.css"
            ],
            "run_at": "document_end"
        },
        {
            "matches": [
                "*://*.u-cursos.cl/*"
            ],
            "js": [
                "js/element-hider.js",
                "js/element-resizer.js"
            ],
            "run_at": "document_start"
        },
        {
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            ],
            "js": [
                "js/integrantes-counter.js"
            ],
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                "*://www.u-cursos.cl/uchile/4/foro_institucion/",
                "*://www.u-cursos.cl/uchile/*/0/*/1/foro/"
            ],
            "js": [
                "js/read-more.js"
            ],
            "run_at": "document_end"
        },
        {
            "matches": [
                "*://*.u-cursos.cl/ingenieria/*/*/*/*notas/*"
            ],
            "js": [
                "js/grade-comments.js"
            ],
            "run_at": "document_end"
        },
        {
            "matches": [
                "*://*.u-cursos.cl/usuario/*/horario/*"
            ],
            "js": [
                "js/week-counter.js",
                "js/ical.js"
            ],
            "run_at": "document_end"
        }
    ],
    "background": {
        "service_worker": "js/background-settings.js"
    },
    "action": {
        "default_popup": "html/menu.html",
        "default_title": "tU-Cursos"
    },
    "icons": {
        "16": "icon16.png",
        "48": "icon48.png",
       "128": "icon128.png" 
    }
}