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gatsby-ssr.js removing all javascript files
let pageScripts;
/*
* The "scripts" variable is not documented by Gatsby, https://www.gatsbyjs.org/docs/ssr-apis/#onRenderBody, and that is probably for a good
* reason. The variable contains the scripts the Gatsby internals, https://github.com/gatsbyjs/gatsby/blob/d9cf5a21403c474846ebdf7a0508902b9b8a2ea9/packages/gatsby/cache-dir/static-entry.js#L270-L283,
* puts into the head and post body. We will be relying on this undocumented variable until it does not work anymore as the alternative is
* to read the webpack.stats.json file and parse it ourselves.
*/
export function onRenderBody({ scripts }) {
if (process.env.NODE_ENV !== 'production') { // During a gatsby development build (gatsby develop) we do nothing.
return;
}
// TODO maybe we should not even wait and see if Gatsby removes this internal "script" variable and code around the issue if the variable is not there.
if (!scripts) {
throw new Error('gatsby-plugin-no-javascript: Gatsby removed an internal detail that this plugin relied upon, please submit this issue to https://www.github.com/itmayziii/gatsby-plugin-no-javascript.');
}
pageScripts = scripts;
}
// Here we rely on the fact that onPreRenderHTML is called after onRenderBody so we have access to the scripts Gatsby inserted into the HTML.
export function onPreRenderHTML({ getHeadComponents, pathname, replaceHeadComponents, getPostBodyComponents, replacePostBodyComponents }, pluginOptions) {
if (process.env.NODE_ENV !== 'production' || checkPathExclusion(pathname, pluginOptions)) { // During a gatsby development build (gatsby develop) we do nothing.
return;
}
replaceHeadComponents(getHeadComponentsNoJS(getHeadComponents(), pluginOptions));
replacePostBodyComponents(getPostBodyComponentsNoJS(getPostBodyComponents(), pluginOptions));
}
function getHeadComponentsNoJS(headComponents, pluginOptions) {
return headComponents.filter((headComponent) => {
// Not a react component and therefore not a <script>.
if (!isReactElement(headComponent)) {
return true;
}
if (pluginOptions.excludeFiles && headComponent.props.href && RegExp(pluginOptions.excludeFiles).test(headComponent.props.href)) {
return true;
}
// Gatsby puts JSON files in the head that should also be removed if javascript is removed, all these Gatsby files are in the
// "/static" or /page-data directories.
if (headComponent.props.href && (headComponent.props.href.startsWith(`${__PATH_PREFIX__}/static/`) || headComponent.props.href.startsWith(`${__PATH_PREFIX__}/page-data/`))) {
return false;
}
return pageScripts.find((script) => {
return headComponent.props.as === 'script' &&
`${__PATH_PREFIX__}/${script.name}` === headComponent.props.href &&
script.rel === headComponent.props.rel;
}) === undefined;
});
}
function getPostBodyComponentsNoJS(postBodyComponents, pluginOptions) {
return postBodyComponents.filter((postBodyComponent) => {
// Not a react component and therefore not a <script>.
if (!isReactElement(postBodyComponent)) {
return true;
}
if (pluginOptions.excludeFiles && postBodyComponent.props.src && RegExp(pluginOptions.excludeFiles).test(postBodyComponent.props.src)) {
return true;
}
// These are special Gatsby files we are calling out specifically.
if (postBodyComponent.props.id && (postBodyComponent.props.id === 'gatsby-script-loader' || postBodyComponent.props.id === 'gatsby-chunk-mapping')) {
return false;
}
if (postBodyComponent.props.src.indexOf('polyfill') > -1) {
return false
}
return pageScripts.find((script) => {
return postBodyComponent.type === 'script' && `${__PATH_PREFIX__}/${script.name}` === postBodyComponent.props.src
}) === undefined;
});
}
function isReactElement(reactNode) {
return reactNode.props !== undefined;
}
function checkPathExclusion(pathname, pluginOptions) {
if (!pluginOptions.excludePaths)
return false;
return RegExp(pluginOptions.excludePaths).test(pathname);
}
@quicoto

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@quicoto quicoto commented Jul 31, 2021

Thank you very much

I've had to add ? as it was failing not finding src

if (postBodyComponent.props.src?.indexOf('polyfill') > -1) {

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