@jspm/generator/lib/common/url.js

Package Import Map Generation Tool

export function isFetchProtocol(protocol) {
    return protocol === 'file:' || protocol === 'https:' || protocol === 'http:' || protocol === 'data:';
}
export let baseUrl;
// @ts-ignore
if (typeof Deno !== 'undefined') {
    // @ts-ignore
    const denoCwd = Deno.cwd();
    baseUrl = new URL('file://' + (denoCwd[0] === '/' ? '' : '/') + denoCwd + '/');
} else if (typeof process !== 'undefined' && process.versions.node) {
    baseUrl = new URL('file://' + process.cwd() + '/');
} else if (typeof document !== 'undefined') {
    baseUrl = new URL(document.baseURI);
}
if (!baseUrl && typeof location !== 'undefined') {
    baseUrl = new URL(location.href);
}
baseUrl.search = baseUrl.hash = '';
export function resolveUrl(url, mapUrl, rootUrl) {
    if (url.startsWith('/')) return rootUrl ? new URL('.' + url.slice(url[1] === '/' ? 1 : 0), rootUrl).href : url;
    return new URL(url, mapUrl).href;
}
export function importedFrom(parentUrl) {
    if (!parentUrl) return '';
    return ` imported from ${parentUrl}`;
}
function matchesRoot(url, baseUrl) {
    return url.protocol === baseUrl.protocol && url.host === baseUrl.host && url.port === baseUrl.port && url.username === baseUrl.username && url.password === baseUrl.password;
}
export function relativeUrl(url, baseUrl, absolute = false) {
    const href = url.href;
    let baseUrlHref = baseUrl.href;
    if (!baseUrlHref.endsWith('/')) baseUrlHref += '/';
    if (href.startsWith(baseUrlHref)) return (absolute ? '/' : './') + href.slice(baseUrlHref.length);
    if (!matchesRoot(url, baseUrl)) return url.href;
    if (absolute) return url.href;
    const baseUrlPath = baseUrl.pathname;
    const urlPath = url.pathname;
    const minLen = Math.min(baseUrlPath.length, urlPath.length);
    let sharedBaseIndex = -1;
    for(let i = 0; i < minLen; i++){
        if (baseUrlPath[i] !== urlPath[i]) break;
        if (urlPath[i] === '/') sharedBaseIndex = i;
    }
    return '../'.repeat(baseUrlPath.slice(sharedBaseIndex + 1).split('/').length - 1) + urlPath.slice(sharedBaseIndex + 1) + url.search + url.hash;
}
export function isURL(specifier) {
    try {
        if (specifier[0] === '#') return false;
        new URL(specifier);
    } catch  {
        return false;
    }
    return true;
}
export function isPlain(specifier) {
    return !isRelative(specifier) && !isURL(specifier);
}
export function isRelative(specifier) {
    return specifier.startsWith('./') || specifier.startsWith('../') || specifier.startsWith('/');
}
export function urlToNiceStr(url) {
    if (url.startsWith(baseUrl.href)) return './' + url.slice(baseUrl.href.length);
}


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