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26 lines
649 B
TypeScript
26 lines
649 B
TypeScript
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class Icon {
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constructor(readonly svg: string) {}
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}
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// We only export the type to prohibit the creation of Icons without using
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// the `svgIcon` template literal tag.
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export type { Icon };
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export function isIcon(icon: unknown): icon is Icon {
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return icon instanceof Icon;
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}
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export class DynamicContentNotAllowedError extends Error {
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constructor() {
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super("Dynamic content in icons is not allowed due to risk of user-injected XSS.");
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}
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}
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export function svgIcon(strings: TemplateStringsArray, ...values: unknown[]): Icon {
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if (values.length > 0) {
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throw new DynamicContentNotAllowedError();
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}
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return new Icon(strings[0]);
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}
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