permissions.contains()

let getContains = browser.permissions.contains(
  permissions                // Permissions object
)

// Extension permissions are:
// "webRequest", "tabs", "*://*.mozilla.org/*", and "healthInfo" in "data_collection"

let testPermissions1 = {
  origins: ["*://mozilla.org/"],
  permissions: ["tabs"],
  data_collection: ["healthInfo"],
};

const testResult1 = await browser.permissions.contains(testPermissions1);
console.log(testResult1); // true

let testPermissions2 = {
  origins: ["*://mozilla.org/"],
  permissions: ["tabs", "alarms"],
};

const testResult2 = await browser.permissions.contains(testPermissions2);
console.log(testResult2); // false, "alarms" doesn't match

let testPermissions3 = {
  origins: ["https://developer.mozilla.org/"],
  permissions: ["tabs", "webRequest"],
};

const testResult3 = await browser.permissions.contains(testPermissions3);
console.log(testResult3); // true: "https://developer.mozilla.org/", matches: "*://*.mozilla.org/*"

let testPermissions4 = {
  origins: ["https://example.org/"],
};

const testResult4 = await browser.permissions.contains(testPermissions4);
console.log(testResult4); // false: "https://example.org/", `origins` doesn't match

let testPermissions5 = {
  data_collection: ["searchTerms"],
};

const testResult5 = await browser.permissions.contains(testPermissions4);
console.log(testResult5); // false: "searchTerms" doesn't match data type in `data_collection`