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.browser-compat-data-process.js
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.browser-compat-data-process.js
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#!/usr/bin/env node
/* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";
import chalk from "chalk";
import {
readFileSync,
existsSync,
statSync,
readdirSync,
writeFileSync,
} from "fs";
import request from "sync-request";
import { dirname, basename, resolve, extname, join } from "path";
import { fileURLToPath } from "url";
const __filename = fileURLToPath(import.meta.url);
const __dirname = dirname(__filename);
const log = (msg) => console.log(`${msg}`);
const note = (msg) => console.log(chalk`{cyanBright ${msg}}`);
const warn = (msg) => console.warn(chalk`{yellowBright ${msg}}`);
const error = (msg) => console.error(chalk`{redBright ${msg}}`);
const success = (msg) => console.log(chalk`{greenBright ${msg}}`);
let mdnOrigin = "http://localhost:5042";
if (process.env.MDN_ORIGIN) {
mdnOrigin = process.env.MDN_ORIGIN;
}
log("loading SPECMAP.json...");
const SPECMAP = JSON.parse(readFileSync("SPECMAP.json", "utf-8"));
log("loading SPECURLS.json...");
const SPECURLS = JSON.parse(readFileSync("SPECURLS.json", "utf-8"));
const options = {
headers: { "User-Agent": "bcd-migration-script" },
gzip: true,
};
const response = request(
"GET",
"https://raw.githubusercontent.com/Fyrd/caniuse/master/data.json",
options
);
const specs = Object.create(null);
let bcdJSONfilename = "";
let targetJSONfile = "";
chalk.level = 3;
const CANIUSE_SPECMAP = {};
const fixCanIUseSpecURLs = (key, data) => {
const isObsolete = (url) => {
const obsoleteBase = [
"dev.w3.org/html5/spec",
"dev.w3.org/2006/webapi/selectors-api2",
"dvcs.w3.org/hg/domcore",
"immersive-web.github.io/webvr/spec/1.1/",
"www.ecma-international.org/",
"www.w3.org/TR/cssom-1",
"www.w3.org/TR/CSS1/",
"www.w3.org/TR/REC-DOM-Level-1/",
"www.w3.org/TR/DOM-Level-2-",
"www.w3.org/TR/DOM-Level-3-Core/",
"www.w3.org/TR/DOM-Level-3-Events/",
"www.w3.org/TR/2000/REC-DOM-Level-2",
"www.w3.org/TR/2009/REC-DOM-Level-2",
"www.w3.org/TR/2014/WD-DOM-Level-3-Events-20140925/",
"www.w3.org/TR/ElementTraversal/",
"www.w3.org/TR/mixed-content/",
"www.w3.org/TR/selectors-api/",
"www.w3.org/TR/dom/",
"www.w3.org/TR/WD-font",
"www.w3.org/TR/html5",
"www.w3.org/TR/2011/WD-html5-20110525",
"www.w3.org/TR/2016/REC-html51-20161101",
"www.w3.org/TR/MathML2",
"www.w3.org/TR/resource-hints",
"www.w3.org/TR/pointerevents1",
"www.w3.org/TR/xml/",
"w3c.github.io/editing/",
"w3c.github.io/webcomponents/spec/shadow/",
"w3c.github.io/staticrange/",
"w3c.github.io/microdata/",
"wiki.csswg.org",
];
const obsoleteSubstrings = [
"html40",
"performancetiming",
"performancenavigation",
"/screen-orientation/published/",
"developer.apple.com/library/safari",
];
return (
obsoleteBase.some((substring) => url.startsWith(substring)) ||
obsoleteSubstrings.some((substring) => url.includes(substring))
);
};
const getAdjustedSpecURL = (url) => {
const urlAdjustmentMap = {
// specBaseURL,
// [target, replacement]
"https://tools.ietf.org/html/": [
"tools.ietf.org",
"datatracker.ietf.org/doc",
],
"https://drafts.csswg.org/mediaqueries/#media0": ["media0", "media"],
"https://drafts.csswg.org/css-conditional/#at-supports-ext": [
"at-supports-ext",
"at-supports",
],
"https://drafts.csswg.org/web-animations-1/": [
"web-animations-1",
"web-animations",
],
"https://drafts.csswg.org/css-color-3/#transparency": [
"css-color-3",
"css-color",
],
"https://drafts.csswg.org/selectors/#gen-content": [
"selectors",
"selectors-3",
],
"https://drafts.csswg.org/selectors/#first-letter": [
"selectors",
"selectors-3",
],
"https://drafts.csswg.org/selectors/#first-line": [
"selectors",
"selectors-3",
],
"https://drafts.csswg.org/selectors/#the-user-action-pseudo-classes-hover-act":
["selectors", "selectors-3"],
"https://drafts.csswg.org/css-text-decor/#text-decoration-skip-ink-property":
["css-text-decor", "css-text-decor-4"],
"https://drafts.csswg.org/css-text-decor/#text-decoration-skipping": [
"css-text-decor",
"css-text-decor-4",
],
"https://drafts.csswg.org/css-text-decor/#text-decoration-width-property":
["css-text-decor", "css-text-decor-4"],
"https://drafts.csswg.org/css-text-decor/#underline-offset": [
"css-text-decor",
"css-text-decor-4",
],
"https://drafts.csswg.org/selectors/#target-pseudo": [
"target-pseudo",
"the-target-pseudo",
],
"https://drafts.csswg.org/selectors/#last-child-pseudo": [
"last-child-pseudo",
"the-last-child-pseudo",
],
"https://drafts.csswg.org/selectors/#empty-pseudo": [
"empty-pseudo",
"the-empty-pseudo",
],
"https://drafts.csswg.org/selectors/#universal-selector": [
"universal-selector",
"the-universal-selector",
],
"https://www.ecma-international.org/ecma-402/2.0/": [
"https://www.ecma-international.org/ecma-402/2.0/",
"https://tc39.es/ecma402/",
],
"https://w3c.github.io/webappsec-csp/2/": [
"https://w3c.github.io/webappsec-csp/2/",
"https://www.w3.org/TR/CSP2/",
],
"https://wicg.github.io/web-share/level-2/": ["wicg", "w3c"],
"https://wicg.github.io/web-share/": ["wicg", "w3c"],
"https://w3c.github.io/speech-api/speechapi.html": [
"https://w3c.github.io/speech-api/speechapi.html",
"https://wicg.github.io/speech-api/",
],
"https://w3c.github.io/speech-api/": ["w3c", "wicg"],
"https://w3c.github.io/keyboard-lock/": ["w3c", "wicg"],
"https://w3c.github.io/netinfo/": ["w3c", "wicg"],
"https://wicg.github.io/mediasession/": ["wicg", "w3c"],
"https://wicg.github.io/media-playback-quality/": ["wicg", "w3c"],
"https://wicg.github.io/media-capabilities/": ["wicg", "w3c"],
"http://www.w3.org/TR/DOM-Level-3-XPath/": [
"http://www.w3.org",
"https://www.w3.org",
],
"https://www.w3.org/TR/CSS21/": ["CSS21", "CSS2"],
"https://www.w3.org/TR/uievents/": [
"https://www.w3.org/TR/uievents/",
"https://w3c.github.io/uievents/",
],
"https://www.w3.org/TR/accelerometer/": [
"https://www.w3.org/TR/accelerometer/",
"https://w3c.github.io/accelerometer/",
],
"https://www.w3.org/TR/WebCryptoAPI/": [
"https://www.w3.org/TR/WebCryptoAPI/",
"https://w3c.github.io/webcrypto/",
],
"https://www.w3.org/TR/orientation-sensor/": [
"https://www.w3.org/TR/orientation-sensor/",
"https://w3c.github.io/orientation-sensor/",
],
"https://www.w3.org/TR/DOM-Parsing/": [
"https://www.w3.org/TR/DOM-Parsing/",
"https://w3c.github.io/DOM-Parsing/",
],
"https://www.w3.org/TR/FileAPI/": [
"https://www.w3.org/TR/FileAPI/",
"https://w3c.github.io/FileAPI/",
],
"https://www.w3.org/TR/SVG/": [
"https://www.w3.org/TR/SVG/",
"https://www.w3.org/TR/SVG11/",
],
"https://www.w3.org/TR/SVG2/": [
"https://www.w3.org/TR/SVG2/",
"https://svgwg.org/svg2-draft/",
],
"http://w3.org/TR/css3-fonts/": [
"http://w3.org/TR/css3-fonts/",
"https://drafts.csswg.org/css-fonts-3/",
],
"https://www.w3.org/TR/css4-images/": [
"https://www.w3.org/TR/css4-images/",
"https://drafts.csswg.org/css-images-4/",
],
"https://www.w3.org/TR/mediaqueries-4/": [
"https://www.w3.org/TR/mediaqueries-4/",
"https://drafts.csswg.org/mediaqueries-4/",
],
"https://www.w3.org/TR/pointerevents/": [
"https://www.w3.org/TR/pointerevents/",
"https://w3c.github.io/pointerevents/",
],
"https://www.w3.org/TR/cssom/": [
"https://www.w3.org/TR/cssom/",
"https://drafts.csswg.org/cssom/",
],
"https://www.w3.org/TR/css-variables-1/": [
"https://www.w3.org/TR/css-variables-1/",
"https://drafts.csswg.org/css-variables/",
],
"https://www.w3.org/TR/cssom-view": [
"https://www.w3.org/TR/cssom-view",
"https://drafts.csswg.org/cssom-view",
],
"http://w3.org/TR/css-fonts/": [
"http://w3.org/TR/css3-fonts/",
"https://drafts.csswg.org/css-fonts-3/",
],
"https://www.w3.org/TR/compositing-1/": [
"https://www.w3.org/TR/compositing-1/",
"https://drafts.fxtf.org/compositing-1/",
],
"https://www.w3.org/TR/filter-effects/": [
"https://www.w3.org/TR/filter-effects/",
"https://drafts.fxtf.org/filter-effects/",
],
"https://www.w3.org/TR/css-masking-1/": [
"https://www.w3.org/TR/css-masking-1/",
"https://drafts.fxtf.org/css-masking-1/",
],
"https://drafts.csswg.org/css-timing-1/": ["timing", "easing"],
"https://drafts.csswg.org/css-logical-props/": [
"/css-logical-props/",
"/css-logical/",
],
"https://tc39.github.io/": [
"https://tc39.github.io/",
"https://tc39.es/",
],
"https://www.w3.org/TR/xpath-20/": ["/TR/xpath-20/", "/TR/xpath20/"],
"https://w3c.github.io/input-events/index.html": [
"/input-events/index.html",
"/input-events/",
],
"https://tc39.es/proposal-array-find-from-last/index.html": [
"/proposal-array-find-from-last/index.html",
"/proposal-array-find-from-last/",
],
"https://w3c.github.io/webappsec-csp/embedded/": [
"/webappsec-csp/embedded/",
"/webappsec-cspee/",
],
"https://wicg.github.io/media-capabilities#": [
"/media-capabilities#",
"/media-capabilities/#",
],
"https://w3c.github.io/keyboard-lock#": [
"/keyboard-lock#",
"/keyboard-lock/#",
],
"https://dev.w3.org/geo/api/spec-source.html": [
"https://dev.w3.org/geo/api/spec-source.html",
"https://w3c.github.io/geolocation-api/",
],
"https://w3c.github.io/dnt/drafts/tracking-dnt.html": [
"https://w3c.github.io/dnt/drafts/tracking-dnt.html",
"https://www.w3.org/TR/tracking-dnt/",
],
"https://w3c.github.io/csswg-drafts/": [
"https://w3c.github.io/csswg-drafts/",
"https://drafts.csswg.org/",
],
"https://www.w3.org/TR/css-": [
"https://www.w3.org/TR/css-",
"https://drafts.csswg.org/css-",
],
"https://w3c.github.io/hr-time/#sec-DOMHighResTimeStamp": [
"#sec-DOMHighResTimeStamp",
"#dom-domhighrestimestamp",
],
"https://www.w3.org/TR/hr-time-1/": [
"https://www.w3.org/TR/hr-time-1/hr-time-1",
"hr-time",
],
"https://w3c.github.io/hr-time/#performance": [
"#performance",
"#sec-performance",
],
"https://w3c.github.io/webcrypto/#dfn-Crypto": [
"#dfn-Crypto",
"#crypto-interface",
],
"https://w3c.github.io/webcrypto/#crypto-interface-attribute-subtle": [
"#crypto-interface-attribute-subtle",
"#Crypto-attribute-subtle",
],
"https://w3c.github.io/webcrypto/#dfn-GlobalCrypto": [
"#dfn-GlobalCrypto",
"#crypto-interface",
],
"https://w3c.github.io/webcrypto/#crypto-interfaceKey": [
"#crypto-interfaceKey",
"#cryptokey-interface",
],
"https://w3c.github.io/webcrypto/#crypto-interfaceKeyPair": [
"#crypto-interfaceKeyPair",
"#keypair",
],
};
if (url.endsWith("#dom-csspropertyrule")) {
return url.replace(
"#dom-csspropertyrule",
"#the-css-property-rule-interface"
);
}
if (url.endsWith("#dom-csstransformvalue")) {
return url.replace("#dom-csstransformvalue", "#transformvalue-objects");
}
if (url.includes("spec.whatwg.org#")) {
return url.replace("spec.whatwg.org#", "spec.whatwg.org/#");
}
if (url.includes("/deviceorientation/spec-source-orientation.html")) {
return url.slice(0, -28);
}
if (url.startsWith("https://w3c.github.io/touch-events/#widl-")) {
return url
.replace(/widl-([^-]+-.+)/, function ($0, $1) {
return $0.replace($1, $1.toLowerCase());
})
.replace("widl", "dom");
}
if (url.includes("#dom-touchlist-item-getter-touch-unsigned-long-index")) {
return url.replace(
"#dom-touchlist-item-getter-touch-unsigned-long-index",
"#dom-touchlist-item"
);
}
if (
url.startsWith(
"https://encoding.spec.whatwg.org/#interface-TextDecoderStream"
)
) {
return url.replace(
"#interface-TextDecoderStream",
"#interface-textdecoderstream"
);
}
if (
url.startsWith(
"https://drafts.css-houdini.org/css-properties-values-api/#the-css-property-rule-interface-inherits"
)
) {
return url.replace(
"#the-css-property-rule-interface-inherits",
"#dom-csspropertyrule-inherits"
);
}
if (
url.startsWith(
"https://drafts.css-houdini.org/css-properties-values-api/#the-css-property-rule-interface-initialvalue"
)
) {
return url.replace(
"#the-css-property-rule-interface-initialvalue",
"#dom-csspropertyrule-initialvalue"
);
}
if (
url.startsWith(
"https://drafts.css-houdini.org/css-properties-values-api/#the-css-property-rule-interface-syntax"
)
) {
return url.replace(
"#the-css-property-rule-interface-syntax",
"#dom-csspropertyrule-syntax"
);
}
if (
url.startsWith(
"https://drafts.css-houdini.org/css-properties-values-api/#the-css-property-rule-interface-name"
)
) {
return url.replace(
"#the-css-property-rule-interface-name",
"#dom-csspropertyrule-name"
);
}
if (
url.startsWith(
"https://drafts.css-houdini.org/css-typed-om/#transformvalue-objects-is2d"
)
) {
return url.replace(
"#transformvalue-objects-is2d",
"#dom-csstransformvalue-is2d"
);
}
if (
url.startsWith(
"https://drafts.css-houdini.org/css-typed-om/#transformvalue-objects-length"
)
) {
return url.replace(
"#transformvalue-objects-length",
"#dom-csstransformvalue-length"
);
}
if (
url.startsWith(
"https://drafts.css-houdini.org/css-typed-om/#transformvalue-objects-tomatrix"
)
) {
return url.replace(
"#transformvalue-objects-tomatrix",
"#dom-csstransformvalue-tomatrix"
);
}
if (
url.startsWith(
"https://w3c.github.io/page-visibility/#dfn-visibilitychange"
)
) {
return url.replace(
"#dfn-visibilitychange",
"#reacting-to-visibilitychange"
);
}
if (
url.startsWith(
"https://w3c.github.io/page-visibility/#visibility-states-and-the-visibilitystate-enum"
)
) {
return url.replace(
"#visibility-states-and-the-visibilitystate-enum",
"#visibilitystate-attribute"
);
}
if (
url.startsWith(
"https://html.spec.whatwg.org/multipage/#dom-documentorshadowroot-fullscreenelement"
)
) {
return url.replace(
"https://html.spec.whatwg.org/multipage/#dom-documentorshadowroot-fullscreenelement",
"https://fullscreen.spec.whatwg.org/#dom-document-fullscreenelement"
);
}
if (url.startsWith("https://www.w3.org/TR/css3-background/")) {
return url.replace(
"https://www.w3.org/TR/css3-background/",
"https://drafts.csswg.org/css-backgrounds-3/"
);
}
if (url.startsWith("https://www.w3.org/TR/css3-mediaqueries/")) {
return url.replace(
"https://www.w3.org/TR/css3-mediaqueries/",
"https://drafts.csswg.org/mediaqueries-3/"
);
}
if (url.startsWith("https://www.w3.org/TR/css3-selectors/")) {
return url.replace(
"https://www.w3.org/TR/css3-selectors/",
"https://drafts.csswg.org/selectors-3/"
);
}
if (url.startsWith("https://www.w3.org/TR/css3-")) {
return url.replace(
/https:\/\/www.w3.org\/TR\/css3-([^/]+)\//,
"https://drafts.csswg.org/css-$1-3/"
);
}
if (url.startsWith("https://www.w3.org/TR/selectors")) {
return url.replace(
/https:\/\/www.w3.org\/TR\/selectors(-)?4\//,
"https://drafts.csswg.org/selectors-4/"
);
}
if (url.includes("://www.ecma-international.org/ecma-262/")) {
return url.replace(
/http(s)?:\/\/www.ecma-international.org\/ecma-262\/[568]\.[01]\/(index.html)?/,
"https://tc39.es/ecma262/"
);
}
for (const specBaseURL in urlAdjustmentMap) {
if (url.startsWith(specBaseURL)) {
const [target, replacement] = urlAdjustmentMap[specBaseURL];
return url.replace(target, replacement);
}
}
return url;
};
const isBrokenSpecURL = (url, parsedURL, SPECURLS) => {
if (url.startsWith("https://html.spec.whatwg.org/multipage/")) {
url = "https://html.spec.whatwg.org/" + parsedURL.hash;
}
if (url.startsWith("https://html.spec.whatwg.org/dev/")) {
url = "https://html.spec.whatwg.org/" + parsedURL.hash;
}
if (url.startsWith("https://www.rfc-editor.org/rfc/rfc2324")) {
// "I'm a teapot" RFC; ignore
return false;
}
if (url.startsWith("https://www.rfc-editor.org/rfc/rfc7168")) {
// "I'm a teapot" RFC; ignore
return false;
}
return !SPECURLS.includes(url);
};
if (data && data instanceof Object && "spec" in data) {
let specURL = getAdjustedSpecURL(data.spec);
if (specURL.startsWith("https://developer.apple.com/")) {
return data;
}
specURL = specURL
.replace(
"https://www.w3.org/TR/DOM-Level-3-XPath/xpath.html#XPathEvaluator-evaluate",
"https://dom.spec.whatwg.org/#interface-xpathevaluator"
)
.replace(/TR\/CSS2\/[^#]+#/, "")
.replace("css-ui-4", "css-ui")
.replace("css-align-3", "css-align")
.replace("css-backgrounds-3", "css-backgrounds")
.replace("css-break-3", "css-break")
.replace("css-cascade-3", "css-cascade")
.replace("css-cascade-4", "css-cascade")
.replace("css-color-3", "css-color")
.replace("css-color-4", "css-color")
.replace("css-color/#currentcolor", "css-color/#currentcolor-color")
.replace("css-color-adjust-1", "css-color-adjust")
.replace("css-conditional-3", "css-conditional")
.replace("css-display-3", "css-display")
.replace("css-env-1", "css-env")
.replace("css-fonts-3", "css-fonts")
.replace("css-fonts-4", "css-fonts")
.replace("css-grid-2", "css-grid")
.replace("css-images-3", "css-images")
.replace("mediaqueries-4", "mediaqueries")
.replace("css-overflow-3", "css-overflow")
.replace("css-pseudo-4", "css-pseudo")
.replace("css-text-3", "css-text")
.replace("css-text-decor-3", "css-text-decor")
.replace("css-ui-3", "css-ui")
.replace("css-values-3", "css-values")
.replace("css-values-4", "css-values")
.replace("css-writing-modes-3", "css-writing-modes")
.replace("cssom-view-1", "cssom-view")
.replace("mediaqueries-3", "mediaqueries")
.replace("/selectors-3/", "/selectors/")
.replace("/selectors-4/", "/selectors/")
.replace("compositing-1", "compositing")
.replace("css-masking-1", "css-masking")
.replace("www.w3.org/TR/clipboard-apis", "w3c.github.io/clipboard-apis")
.replace(
"w3.org/TR/css3-fonts/#font-rend-props",
"drafts.csswg.org/css-fonts/#font-rend-props"
)
.replace(
"#widl-Element-insertAdjacentHTML-void-DOMString-position-DOMString-text",
"#dom-element-insertadjacenthtml"
)
.replace("#image-orientation", "#the-image-orientation")
.replace(
"css-color-4/#color-adjust",
"css-color-adjust-1/#propdef-color-adjust"
)
.replace(
"css-fonts-3/#propdef-font-variant-alternates",
"css-fonts-4/#propdef-font-variant-alternates"
)
.replace(
"css-images-3/#cross-fade-function",
"css-images-4/#cross-fade-function"
)
.replace(
"css-lists-3/#marker-pseudo-element",
"css-pseudo-4/#marker-pseudo"
)
.replace(
"css-contain-1/#contain-property",
"css-contain/#contain-property"
)
.replace(
"css-contain-2/#content-visibility",
"css-contain/#content-visibility"
)
.replace("selectors/#first-letter", "css-pseudo/#first-letter-pseudo")
.replace("selectors/#first-line", "css-pseudo/#first-line-pseudo")
.replace(
"proposal-flatMap/#sec-Array.prototype.flat",
"ecma262/#sec-array.prototype.flat"
)
.replace(
"#sec-Date.prototype.toLocaleDateString",
"#sup-date.prototype.tolocaledatestring"
)
.replace(
"#RandomSource-method-getRandomValues",
"#Crypto-method-getRandomValues"
)
.replace("#widl-KeyboardEvent-charCode", "#dom-keyboardevent-charcode")
.replace("#widl-KeyboardEvent-code", "#dom-keyboardevent-code")
.replace(
"#widl-KeyboardEvent-getModifierState",
"#dom-keyboardevent-getmodifierstate"
)
.replace("#widl-KeyboardEvent-location", "#dom-keyboardevent-location")
.replace("#widl-KeyboardEvent-which", "#dom-uievent-which")
.replace(
"#unhandled-promise-rejections:event-unhandledrejection",
"#unhandled-promise-rejections"
)
.replace(
"https://www.w3.org/TR/SVG11/extend.html#ForeignObjectElement",
"https://svgwg.org/svg2-draft/embedded.html#ForeignObjectElement"
)
.replace(
"https://www.w3.org/TR/SVG11/linking.html#SVGFragmentIdentifiers",
"https://svgwg.org/svg2-draft/linking.html#SVGFragmentIdentifiers"
);
specURL = specURL
.replace(
"ecma262/#sec-14.1",
"ecma262/#sec-directive-prologues-and-the-use-strict-directive"
)
.replace("ecma262/#sec-15.12", "ecma262/#sec-json-object")
.replace("ecma262/#sec-15.12", "ecma262/#sec-json-object")
.replace(
"ecma402/#sec-13.1.1",
"ecma402/#sup-String.prototype.localeCompare"
);
if (specURL.endsWith("ecma262/#")) {
specURL = "https://tc39.es/ecma262/#sec-generator-function-definitions";
}
const parsedURL = new URL(specURL);
if (!parsedURL.hash) {
return data;
}
if (
!specURL.startsWith("https://html.spec.whatwg.org/") &&
!specURL.startsWith("https://tc39.es/ecma262/")
) {
const base = parsedURL.host + parsedURL.pathname;
if (isObsolete(base)) {
return data;
}
if (isBrokenSpecURL(specURL, parsedURL, SPECURLS)) {
warn(`bad caniuse spec URL ${specURL}`);
return data;
}
}
note("caniuse spec URL: " + specURL);
CANIUSE_SPECMAP[specURL] = {};
CANIUSE_SPECMAP[specURL].feature = key;
CANIUSE_SPECMAP[specURL].title = data.title;
} else {
return data;
}
};
log("loading caniuse data...");
JSON.parse(response.getBody("utf8"), fixCanIUseSpecURLs);
const getAdjustedData = (locationkey, url, path, baseurl, host, fragment) => {
if (host.includes("spec.whatwg.org")) {
path = host.split(".")[0];
locationkey = fragment;
if (url.startsWith("https://html.spec.whatwg.org/multipage/")) {
baseurl = "https://html.spec.whatwg.org/multipage/";
}
} else if (
url.startsWith(
"https://httpwg.org/http-extensions/draft-ietf-httpbis-rfc6265bis.html"
)
) {
path = "draft-ietf-httpbis-rfc6265bis";
locationkey = fragment;
baseurl =
"https://httpwg.org/http-extensions/draft-ietf-httpbis-rfc6265bis.html";
} else if (host.includes("httpwg.org")) {
path = url.substring(25, 32);
locationkey = fragment;
baseurl = url.substring(0, 37);
} else if (url.startsWith("https://tc39.es/ecma262/multipage/")) {
path = "ecmascript";
locationkey = fragment;
baseurl = "https://tc39.es/ecma262/multipage/";
} else if (url.includes("/gamepad/extensions.html")) {
path = "gamepad-extensions";
locationkey = fragment;
baseurl = "https://w3c.github.io/gamepad/extensions.html";
} else if (url.includes("/WebAssembly/design/blob/master/Web.md")) {
path = "wasm-web-embedding";
locationkey = fragment;
baseurl = "https://webassembly.org/docs/web/";
} else if (url.startsWith("https://datatracker.ietf.org/doc/html/")) {
const name = locationkey.split("#")[0];
path = name;
locationkey = fragment;
baseurl = "https://datatracker.ietf.org/doc/html/" + name;
} else if (url.startsWith("https://www.rfc-editor.org/rfc/")) {
const name = locationkey.split("#")[0];
path = name;
locationkey = fragment;
baseurl = "https://www.rfc-editor.org/rfc/" + name;
}
return [locationkey, path, baseurl];
};
const getSpecShortnameAndLocationKey = (url, feature, mdnURL) => {
if (url.includes("##")) {
url = url.replace("##", "#");
}
let locationkey = "";
let baseurl = "";
let path = new URL(url).pathname;
const host = new URL(url).host;
let fragment = new URL(url).hash.slice(1);
try {
fragment = decodeURIComponent(fragment);
} catch {
warn(`${feature}: odd fragment: ${fragment}`);
}
const filename = path.split("/").slice(-1)[0];
if (filename !== "") {
locationkey = filename + "#" + fragment;
baseurl = dirname(url.split("#")[0]);
} else {
locationkey = fragment;
baseurl = url.split("#")[0];
}
if (baseurl.slice(-2) === "//") {
// FIXME temporary https://github.com/mdn/browser-compat-data/pull/16527
if (!url.startsWith("https://www.w3.org/TR/largest-contentful-paint")) {
error(`${feature}: ${mdnURL} has bad spec URL ${url}`);
}
baseurl = baseurl.slice(0, -1);
}
baseurl = baseurl.slice(-1) !== "/" ? baseurl + "/" : baseurl;
[locationkey, path, baseurl] = getAdjustedData(
locationkey,
url,
path,
baseurl,
host,
fragment
);
let shortname = basename(path).toLowerCase();
if (filename !== "") {
/* Get the second-to-last component of the path (the name of the parent
* directory of the file). */
shortname = path.split("/").slice(-2).reverse().pop().toLowerCase();
}
if (url.startsWith("https://sourcemaps.info/")) {
baseurl = "https://sourcemaps.info/spec.html";
shortname = "sourcemaps";
}
if (baseurl in SPECMAP) {
shortname = SPECMAP[baseurl].slice(0, -5);
} else {
if (
!(
baseurl ===
"https://tc39.es/proposal-intl-numberformat-v3/out/numberformat/" ||
baseurl ===
"https://tc39.es/proposal-intl-numberformat-v3/out/pluralrules/"
)
) {
SPECMAP[baseurl] = shortname + ".json";
}
}
if (!(shortname in specs)) {
specs[shortname] = Object.create(null);
}
return [shortname, baseurl, locationkey];
};
const getMdnSlug = (mdnURL, feature) => {
if (
mdnURL
.toLowerCase()
.startsWith("https://developer.mozilla.org/en-us/docs/web/")
) {
mdnURL = mdnURL.substring(45);
} else if (
mdnURL
.toLowerCase()
.startsWith("https://developer.mozilla.org/en-us/docs/learn/")
) {
mdnURL = mdnURL.substring(47);
} else {
warn(`${feature}: odd MDN URL: ${mdnURL}`);
}
return mdnURL;
};
const fixEdgeBlinkVersion = (versionAdded) => {
if (typeof versionAdded === "string") {
if (parseFloat(versionAdded) <= 79) {
versionAdded = "79";
}
}
return versionAdded;
};
const fixEdgeLegacyVersion = (versionAdded) => {
if (typeof versionAdded === "string") {
if (parseFloat(versionAdded) >= 79) {
versionAdded = false;
}
}
return versionAdded;
};
const getDataForEngine = (engineSupport) => {
const engineData = {
hasSupport: false,
needsflag: false,
partial: false,
prefixed: false,
altname: false,
};
if (engineSupport === "mirror") {
return engineData;
}
if (engineSupport instanceof Array) {
for (const versionDetails of engineSupport) {
if (versionDetails === "mirror") {
continue;
}
if ("version_removed" in versionDetails) {
continue;
}
if ("version_added" in versionDetails) {
if (versionDetails.version_added === false) {
continue;
}
if (versionDetails.version_added === null) {
continue;
}
if (
"alternative_name" in versionDetails &&
engineData.hasSupport !== true
) {
engineData.altname = true;
continue;
}
if ("prefix" in versionDetails && engineData.hasSupport !== true) {
engineData.prefixed = true;
continue;
}
if (
"partial_implementation" in versionDetails &&
engineData.hasSupport !== true
) {
engineData.partial = true;
continue;
}
if ("flags" in versionDetails) {
engineData.hasSupport = true;
engineData.needsflag = true;
engineData.altname = false;
engineData.prefixed = false;
engineData.partial = false;
continue;
}
engineData.altname = false;
engineData.prefixed = false;
engineData.partial = false;
engineData.needsflag = false;
engineData.hasSupport = true;
return engineData;
}
}
return engineData;
} else if ("version_removed" in engineSupport) {
return engineData;
} else if ("version_added" in engineSupport) {
if (engineSupport.version_added === false) {
return engineData;
}
if (engineSupport.version_added === null) {
return engineData;
}
if ("alternative_name" in engineSupport) {
engineData.altname = true;
return engineData;
}
if ("prefix" in engineSupport) {
engineData.prefixed = true;
return engineData;
}
if ("partial_implementation" in engineSupport) {
engineData.partial = true;
return engineData;
}
if ("flags" in engineSupport) {
engineData.needsflag = true;
}
engineData.hasSupport = true;
return engineData;
}
return engineData;
};
const getSupportData = (support) => {
const supportData = {
engines: [],
needsflag: [],
partial: [],
prefixed: [],
altname: [],
};
if (!support) {
return supportData;
}
const updateSupportData = (engineData, engineName) => {
if (engineData.hasSupport && !supportData.engines.includes(engineName)) {
supportData.engines.push(engineName);
}
if (engineData.partial && !supportData.partial.includes(engineName)) {
supportData.partial.push(engineName);
}
if (engineData.prefixed && !supportData.prefixed.includes(engineName)) {
supportData.prefixed.push(engineName);
}
if (engineData.altname && !supportData.altname.includes(engineName)) {
supportData.altname.push(engineName);
}
if (engineData.needsflag && !supportData.needsflag.includes(engineName)) {
supportData.needsflag.push(engineName);
}
};
if ("chrome" in support) {
updateSupportData(getDataForEngine(support.chrome), "blink");
}
if ("chrome_android" in support) {
updateSupportData(getDataForEngine(support.chrome_android), "blink");
}
if ("firefox" in support) {
updateSupportData(getDataForEngine(support.firefox), "gecko");
}
if ("firefox_android" in support) {
updateSupportData(getDataForEngine(support.firefox_android), "gecko");
}
if ("safari" in support) {
updateSupportData(getDataForEngine(support.safari), "webkit");
}
if ("safari_ios" in support) {
updateSupportData(getDataForEngine(support.safari_ios), "webkit");
}
return supportData;
};
const adjustSupport = (support) => {
for (const browser in support) {
if ("chrome" == browser) {
const chromeSupport = support.chrome;
support.edge_blink = JSON.parse(JSON.stringify(chromeSupport));
if (chromeSupport instanceof Array) {
for (let i = 0; i < chromeSupport.length; i++) {
if (!("version_removed" in chromeSupport[i])) {
support.edge_blink[i].version_added = fixEdgeBlinkVersion(
chromeSupport[i].version_added
);
} else {
support.edge_blink[i].version_added = false;
}