1f240d72c3
Summary: Pull Request resolved: https://github.com/facebook/flipper/pull/3297 Reviewed By: passy Differential Revision: D33619287 fbshipit-source-id: 7e9dc595c999e9c8b61329f96adba6e45a1dfa50
69 lines
1.6 KiB
TypeScript
69 lines
1.6 KiB
TypeScript
/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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*/
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// https://github.com/microsoft/TypeScript/issues/36931#issuecomment-846131999
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type Assert = (condition: unknown) => asserts condition;
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export const assert: Assert = (condition) => {
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if (!condition) {
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throw new Error();
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}
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};
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export const safeJSONStringify = (data: unknown): string => {
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try {
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return JSON.stringify(data);
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} catch {
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return 'Unable to serialize';
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}
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};
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export const isPromise = (val: unknown): val is Promise<unknown> =>
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typeof val === 'object' &&
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val !== null &&
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typeof (val as Promise<unknown>).then === 'function' &&
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typeof (val as Promise<unknown>).catch === 'function';
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// TODO: Share types wiht desktop
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type OS =
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| 'iOS'
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| 'Android'
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| 'Metro'
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| 'Windows'
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| 'MacOS'
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| 'Browser'
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| 'Linux';
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// https://stackoverflow.com/a/31456668
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const detectDeviceType = () =>
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typeof process === 'object' &&
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typeof process.versions === 'object' &&
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typeof process.versions.node !== 'undefined'
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? 'Node.js'
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: 'Browser';
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export const detectOS = (): OS => {
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if (detectDeviceType() === 'Browser') {
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return 'Browser';
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}
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switch (require('os').type()) {
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case 'Linux':
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return 'Linux';
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case 'Darwin':
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return 'MacOS';
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default:
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return 'Windows';
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}
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};
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export const detectDevice = (): string => {
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if (detectDeviceType() === 'Browser') {
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return window.navigator.userAgent;
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}
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return require('os').release();
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};
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