const timeout = ms => new Promise((resolve, reject) => setTimeout(() => resolve(), ms)) const start = (ctx) => { return timeout(ctx.timer).then(() => { return start(ctx) }).catch(e => { return start(ctx) }) } const main = () => start({timer:0}) main() const timeout = ms => new Promise((resolve, reject) => setTimeout(() => resolve(), ms)) const start = ctx => { timeout(ctx.timer).then(() => { start
![promiseの無限ループはメモリリークする - Qiita](https://cdn-ak-scissors.b.st-hatena.com/image/square/cc5359f7ac11e3c28e00bb6813b0fa9835f1e6dc/height=288;version=1;width=512/https%3A%2F%2Fqiita-user-contents.imgix.net%2Fhttps%253A%252F%252Fcdn.qiita.com%252Fassets%252Fpublic%252Farticle-ogp-background-9f5428127621718a910c8b63951390ad.png%3Fixlib%3Drb-4.0.0%26w%3D1200%26mark64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTkxNiZoPTMzNiZ0eHQ9cHJvbWlzZSVFMyU4MSVBRSVFNyU4NCVBMSVFOSU5OSU5MCVFMyU4MyVBQiVFMyU4MyVCQyVFMyU4MyU5NyVFMyU4MSVBRiVFMyU4MyVBMSVFMyU4MyVBMiVFMyU4MyVBQSVFMyU4MyVBQSVFMyU4MyVCQyVFMyU4MiVBRiVFMyU4MSU5OSVFMyU4MiU4QiZ0eHQtY29sb3I9JTIzMjEyMTIxJnR4dC1mb250PUhpcmFnaW5vJTIwU2FucyUyMFc2JnR4dC1zaXplPTU2JnR4dC1jbGlwPWVsbGlwc2lzJnR4dC1hbGlnbj1sZWZ0JTJDdG9wJnM9NTYyN2RlY2VlOGFiZTBiZGM5YmIzYmMxYjAyODcyNjE%26mark-x%3D142%26mark-y%3D112%26blend64%3DaHR0cHM6Ly9xaWl0YS11c2VyLWNvbnRlbnRzLmltZ2l4Lm5ldC9-dGV4dD9peGxpYj1yYi00LjAuMCZ3PTYxNiZ0eHQ9JTQweW91MjE5NzklNDBnaXRodWImdHh0LWNvbG9yPSUyMzIxMjEyMSZ0eHQtZm9udD1IaXJhZ2lubyUyMFNhbnMlMjBXNiZ0eHQtc2l6ZT0zNiZ0eHQtYWxpZ249bGVmdCUyQ3RvcCZzPTU2YTE1MzM2ZmJiNjA0MTFjM2NjYWEzMGU4OWIwMTRl%26blend-x%3D142%26blend-y%3D491%26blend-mode%3Dnormal%26s%3D72e0916bf0a0ca4695d89a0b1c03d301)