How to subtract dates in Node.js
Need to subtract dates in Node.js? No problem, let’s use Java for that. After installing GraalVM using SDKMAN: $ sdk install java 20.0.1-graal as well as installing GraalVM’s Node.js runtime using gu1: $ gu install nodejs we can now perform some black magic: // index.js // "Import" LocalDate & ChronoUnit from ☕️ const LocalDate = Java.type("java.time.LocalDate"); const ChronoUnit = Java.type("java.time.temporal.ChronoUnit"); const firstDate = LocalDate.of(2023, 7, 20); const secondDate = LocalDate.of(2023, 8, 4); console.log(ChronoUnit.DAYS.between(firstDate, secondDate)); $ ~/.sdkman/candidates/java/20.0.1-graal/languages/nodejs/bin/node --polyglot index.js 15 Look ma, no Moment.js, Day.js or date-fns! (Just a kickass runtime.) ...