subresourceIntegrity(options?)

Computes Subresource Integrity for final local JS/CSS and updates HTML script, stylesheet, preload, and modulepreload tags.

subresourceIntegrity({
	algorithms: ["sha384", "sha512"],
	crossorigin: "anonymous",
	manifest: "meta/integrity.json",
	strict: false,
});

Option	Default	Description
algorithms	"sha384"	sha256 / sha384 / sha512; multiple digests supported
filter	JavaScript and CSS	RegExp or (fileName, type) => boolean
crossorigin	"anonymous"	anonymous / use-credentials; false disables automatic addition
overwrite	true	Overwrite existing local integrity/crossorigin attributes
manifest	false	true emits integrity-manifest.json; a string specifies a safe relative path
strict	false	Fail the build when local scripts/styles cannot be matched to bundle output

Full URLs count as local only when same-origin with an absolute base and under its path. Other remote assets are not downloaded or hashed. publicDir files are outside the bundle; include them in the graph or handle separately before enabling strict mode. Place before precompression even when used alone.

subresourceIntegrity Integrity

Generates SRI for final Vite JS/CSS and updates built HTML entries.

Runs late in output processing. Place before precompression so .gz/.br HTML matches the integrity-injected originals.

Signature

export function subresourceIntegrity(options: SubresourceIntegrityPluginOptions = {}): Plugin;

Example

import { subresourceIntegrity } from "fast-vite-plugins";

const plugin = subresourceIntegrity({ algorithms: ["sha384"], manifest: "meta/integrity.json" });

export default { plugins: [plugin] };

Input

Input	Type	Required / default	Description
options	SubresourceIntegrityPluginOptions	Optional; defaults to {}	Digest algorithms, asset filters, CORS, overwrite, manifest, and strict settings.

Returns

Value	Type	Description
plugin	Plugin	Subresource Integrity plugin for Vite plugins.