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close #24 css text can be null

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This commit is contained in:
Yanzhen Yu
2020-01-26 20:08:52 +08:00
parent 7c01ec3c27
commit b5e9b40f4d
1 changed files with 34 additions and 28 deletions
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12
src/snapshot.ts
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@@ -68,8 +68,13 @@ function extractOrigin(url: string): string {
const URL_IN_CSS_REF = /url\((?:'([^']*)'|"([^"]*)"|([^)]*))\)/gm;
const RELATIVE_PATH = /^(?!www\.|(?:http|ftp)s?:\/\/|[A-Za-z]:\\|\/\/).*/;
const DATA_URI = /^(data:)([\w\/\+\-]+);(charset=[\w-]+|base64).*,(.*)/i;
export function absoluteToStylesheet(cssText: string, href: string): string {
return cssText.replace(URL_IN_CSS_REF, (origin, path1, path2, path3) => {
export function absoluteToStylesheet(
cssText: string | null,
href: string,
): string {
return (cssText || '').replace(
URL_IN_CSS_REF,
(origin, path1, path2, path3) => {
const filePath = path1 || path2 || path3;
if (!filePath) {
return origin;
@@ -96,7 +101,8 @@ export function absoluteToStylesheet(cssText: string, href: string): string {
}
}
return `url('${stack.join('/')}')`;
});
},
);
}
function getAbsoluteSrcsetString(doc: Document, attributeValue: string) {