本文整理匯總了TypeScript中@jupyterlab/codemirror.Mode.ensure方法的典型用法代碼示例。如果您正苦於以下問題：TypeScript Mode.ensure方法的具體用法？TypeScript Mode.ensure怎麽用？TypeScript Mode.ensure使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類@jupyterlab/codemirror.Mode的用法示例。
在下文中一共展示了Mode.ensure方法的2個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的TypeScript代碼示例。
示例1: it
it('should add a spec loader', async () => {
let called = 0;
let loaded = 0;
Mode.addSpecLoader(async spec => {
called++;
if (spec.mode !== 'bar') {
return false;
}
loaded++;
return true;
}, 42);
CodeMirror.modeInfo.push(fakeMode('bar'));
let spec = await Mode.ensure('bar');
expect(called).to.equal(1);
expect(loaded).to.equal(1);
expect(spec.name).to.equal('BAR');
spec = await Mode.ensure('python');
expect(called).to.equal(1);
expect(loaded).to.equal(1);
try {
spec = await Mode.ensure('APL');
} catch (err) {
// apparently one cannot use webpack `require` in jest
}
expect(called).to.equal(2);
expect(loaded).to.equal(1);
});示例2: callback
highlight: (code, lang, callback) => {
let cb = (err: Error | null, code: string) => {
if (callback) {
callback(err, code);
}
return code;
};
if (!lang) {
// no language, no highlight
return cb(null, code);
}
Mode.ensure(lang).then(spec => {
let el = document.createElement('div');
if (!spec) {
console.log(`No CodeMirror mode: ${lang}`);
return cb(null, code);
}
try {
Mode.run(code, spec.mime, el);
return cb(null, el.innerHTML);
} catch (err) {
console.log(`Failed to highlight ${lang} code`, err);
return cb(err, code);
}
}).catch(err => {
console.log(`No CodeMirror mode: ${lang}`);
console.log(`Require CodeMirror mode error: ${err}`);
return cb(null, code);
});
return code;
}