canirequire › CommonJS › ssri
Is ssri ESM-only? Can you require() it?
Standard Subresource Integrity library -- parses, serializes, generates, and verifies integrity metadata according to the SRI spec.
Last verified Sep 9, 2026 against ssri@14.0.0. JSON
CommonJS CommonJS — require() works on every Node.js version
ssri ships CommonJS only. require("ssri") works everywhere. import "ssri" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.
Does ssri@14.0.0 actually load? Runtime test results
Installed and executed on Sep 9, 2026 with require("ssri") from a CommonJS file and import "ssri" from an ES module.
| Runtime | require("ssri") | import "ssri" |
|---|---|---|
| Node.js 18 | ✓ works | ✓ works |
| Node.js 20 | ✓ works | ✓ works |
| Node.js 22 | ✓ works | ✓ works |
| Node.js 24 | ✓ works | ✓ works |
| Node.js 26 | ✓ works | ✓ works |
| Bun 1.4 | ✓ works | ✓ works |
How to import ssri
ES modules (import)
import ssri from "ssri";Named imports from a CommonJS package only work when Node.js can statically detect them. If a named import fails, use the default import and destructure.
CommonJS (require)
const ssri = require("ssri");Module format by version
Derived from the type, main and exports fields of every stable release on npm (44 versions; the newest 44 shown).
| Versions | Format | First published |
|---|---|---|
| 0.0.0 – 14.0.0 | CommonJS | Mar 23, 2017 |
Frequently asked
Is ssri ESM-only?
ssri@14.0.0 is a CommonJS package. ssri ships CommonJS only. require("ssri") works everywhere. import "ssri" also works because Node.js and Bun can import CommonJS from ES modules, but only the default export is guaranteed; named imports depend on Node's static analysis of the module.
Can I import ssri with ES module syntax?
Yes. import ssri from "ssri" works in Node.js and Bun because they support importing CommonJS modules. Named imports work only when Node.js can statically detect the exports.
Does ssri work in Bun?
Yes. import "ssri" loaded successfully in Bun 1.4 on Sep 9, 2026.
Does ssri ship TypeScript types?
Not bundled. Install the community types with "npm install -D @types/ssri".
Links
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