Auto-commit 2026-04-29 16:31

node_modules/preact-render-to-string/src/pretty.js

@@ -0,0 +1,389 @@
+import {
+	encodeEntities,
+	indent,
+	isLargeString,
+	styleObjToCss,
+	getChildren,
+	createComponent,
+	getContext,
+	UNSAFE_NAME,
+	XLINK,
+	VOID_ELEMENTS
+} from './util';
+import { options, Fragment } from 'preact';
+
+// components without names, kept as a hash for later comparison to return consistent UnnamedComponentXX names.
+const UNNAMED = [];
+
+export function _renderToStringPretty(
+	vnode,
+	context,
+	opts,
+	inner,
+	isSvgMode,
+	selectValue
+) {
+	if (vnode == null || typeof vnode === 'boolean') {
+		return '';
+	}
+
+	// #text nodes
+	if (typeof vnode !== 'object') {
+		if (typeof vnode === 'function') return '';
+		return encodeEntities(vnode);
+	}
+
+	let pretty = opts.pretty,
+		indentChar = pretty && typeof pretty === 'string' ? pretty : '\t';
+
+	if (Array.isArray(vnode)) {
+		let rendered = '';
+		for (let i = 0; i < vnode.length; i++) {
+			if (pretty && i > 0) rendered = rendered + '\n';
+			rendered =
+				rendered +
+				_renderToStringPretty(
+					vnode[i],
+					context,
+					opts,
+					inner,
+					isSvgMode,
+					selectValue
+				);
+		}
+		return rendered;
+	}
+
+	// VNodes have {constructor:undefined} to prevent JSON injection:
+	if (vnode.constructor !== undefined) return '';
+
+	let nodeName = vnode.type,
+		props = vnode.props,
+		isComponent = false;
+
+	// components
+	if (typeof nodeName === 'function') {
+		isComponent = true;
+		if (opts.shallow && (inner || opts.renderRootComponent === false)) {
+			nodeName = getComponentName(nodeName);
+		} else if (nodeName === Fragment) {
+			const children = [];
+			getChildren(children, vnode.props.children);
+			return _renderToStringPretty(
+				children,
+				context,
+				opts,
+				opts.shallowHighOrder !== false,
+				isSvgMode,
+				selectValue
+			);
+		} else {
+			let rendered;
+
+			let c = (vnode.__c = createComponent(vnode, context));
+
+			// options._diff
+			if (options.__b) options.__b(vnode);
+
+			// options._render
+			let renderHook = options.__r;
+
+			if (
+				!nodeName.prototype ||
+				typeof nodeName.prototype.render !== 'function'
+			) {
+				let cctx = getContext(nodeName, context);
+
+				// If a hook invokes setState() to invalidate the component during rendering,
+				// re-render it up to 25 times to allow "settling" of memoized states.
+				// Note:
+				//   This will need to be updated for Preact 11 to use internal.flags rather than component._dirty:
+				//   https://github.com/preactjs/preact/blob/d4ca6fdb19bc715e49fd144e69f7296b2f4daa40/src/diff/component.js#L35-L44
+				let count = 0;
+				while (c.__d && count++ < 25) {
+					c.__d = false;
+
+					if (renderHook) renderHook(vnode);
+
+					// stateless functional components
+					rendered = nodeName.call(vnode.__c, props, cctx);
+				}
+			} else {
+				let cctx = getContext(nodeName, context);
+
+				// c = new nodeName(props, context);
+				c = vnode.__c = new nodeName(props, cctx);
+				c.__v = vnode;
+				// turn off stateful re-rendering:
+				c._dirty = c.__d = true;
+				c.props = props;
+				if (c.state == null) c.state = {};
+
+				if (c._nextState == null && c.__s == null) {
+					c._nextState = c.__s = c.state;
+				}
+
+				c.context = cctx;
+				if (nodeName.getDerivedStateFromProps)
+					c.state = Object.assign(
+						{},
+						c.state,
+						nodeName.getDerivedStateFromProps(c.props, c.state)
+					);
+				else if (c.componentWillMount) {
+					c.componentWillMount();
+
+					// If the user called setState in cWM we need to flush pending,
+					// state updates. This is the same behaviour in React.
+					c.state =
+						c._nextState !== c.state
+							? c._nextState
+							: c.__s !== c.state
+							? c.__s
+							: c.state;
+				}
+
+				if (renderHook) renderHook(vnode);
+
+				rendered = c.render(c.props, c.state, c.context);
+			}
+
+			if (c.getChildContext) {
+				context = Object.assign({}, context, c.getChildContext());
+			}
+
+			if (options.diffed) options.diffed(vnode);
+			return _renderToStringPretty(
+				rendered,
+				context,
+				opts,
+				opts.shallowHighOrder !== false,
+				isSvgMode,
+				selectValue
+			);
+		}
+	}
+
+	// render JSX to HTML
+	let s = '<' + nodeName,
+		propChildren,
+		html;
+
+	if (props) {
+		let attrs = Object.keys(props);
+
+		// allow sorting lexicographically for more determinism (useful for tests, such as via preact-jsx-chai)
+		if (opts && opts.sortAttributes === true) attrs.sort();
+
+		for (let i = 0; i < attrs.length; i++) {
+			let name = attrs[i],
+				v = props[name];
+			if (name === 'children') {
+				propChildren = v;
+				continue;
+			}
+
+			if (UNSAFE_NAME.test(name)) continue;
+
+			if (
+				!(opts && opts.allAttributes) &&
+				(name === 'key' ||
+					name === 'ref' ||
+					name === '__self' ||
+					name === '__source')
+			)
+				continue;
+
+			if (name === 'defaultValue') {
+				name = 'value';
+			} else if (name === 'defaultChecked') {
+				name = 'checked';
+			} else if (name === 'defaultSelected') {
+				name = 'selected';
+			} else if (name === 'className') {
+				if (typeof props.class !== 'undefined') continue;
+				name = 'class';
+			} else if (isSvgMode && XLINK.test(name)) {
+				name = name.toLowerCase().replace(/^xlink:?/, 'xlink:');
+			}
+
+			if (name === 'htmlFor') {
+				if (props.for) continue;
+				name = 'for';
+			}
+
+			if (name === 'style' && v && typeof v === 'object') {
+				v = styleObjToCss(v);
+			}
+
+			// always use string values instead of booleans for aria attributes
+			// also see https://github.com/preactjs/preact/pull/2347/files
+			if (name[0] === 'a' && name['1'] === 'r' && typeof v === 'boolean') {
+				v = String(v);
+			}
+
+			let hooked =
+				opts.attributeHook &&
+				opts.attributeHook(name, v, context, opts, isComponent);
+			if (hooked || hooked === '') {
+				s = s + hooked;
+				continue;
+			}
+
+			if (name === 'dangerouslySetInnerHTML') {
+				html = v && v.__html;
+			} else if (nodeName === 'textarea' && name === 'value') {
+				// <textarea value="a&b"> --> <textarea>a&amp;b</textarea>
+				propChildren = v;
+			} else if ((v || v === 0 || v === '') && typeof v !== 'function') {
+				if (v === true || v === '') {
+					v = name;
+					// in non-xml mode, allow boolean attributes
+					if (!opts || !opts.xml) {
+						s = s + ' ' + name;
+						continue;
+					}
+				}
+
+				if (name === 'value') {
+					if (nodeName === 'select') {
+						selectValue = v;
+						continue;
+					} else if (
+						// If we're looking at an <option> and it's the currently selected one
+						nodeName === 'option' &&
+						selectValue == v &&
+						// and the <option> doesn't already have a selected attribute on it
+						typeof props.selected === 'undefined'
+					) {
+						s = s + ` selected`;
+					}
+				}
+				s = s + ` ${name}="${encodeEntities(v)}"`;
+			}
+		}
+	}
+
+	// account for >1 multiline attribute
+	if (pretty) {
+		let sub = s.replace(/\n\s*/, ' ');
+		if (sub !== s && !~sub.indexOf('\n')) s = sub;
+		else if (pretty && ~s.indexOf('\n')) s = s + '\n';
+	}
+
+	s = s + '>';
+
+	if (UNSAFE_NAME.test(nodeName))
+		throw new Error(`${nodeName} is not a valid HTML tag name in ${s}`);
+
+	let isVoid =
+		VOID_ELEMENTS.test(nodeName) ||
+		(opts.voidElements && opts.voidElements.test(nodeName));
+	let pieces = [];
+
+	let children;
+	if (html) {
+		// if multiline, indent.
+		if (pretty && isLargeString(html)) {
+			html = '\n' + indentChar + indent(html, indentChar);
+		}
+		s = s + html;
+	} else if (
+		propChildren != null &&
+		getChildren((children = []), propChildren).length
+	) {
+		let hasLarge = pretty && ~s.indexOf('\n');
+		let lastWasText = false;
+
+		for (let i = 0; i < children.length; i++) {
+			let child = children[i];
+
+			if (child != null && child !== false) {
+				let childSvgMode =
+						nodeName === 'svg'
+							? true
+							: nodeName === 'foreignObject'
+							? false
+							: isSvgMode,
+					ret = _renderToStringPretty(
+						child,
+						context,
+						opts,
+						true,
+						childSvgMode,
+						selectValue
+					);
+
+				if (pretty && !hasLarge && isLargeString(ret)) hasLarge = true;
+
+				// Skip if we received an empty string
+				if (ret) {
+					if (pretty) {
+						let isText = ret.length > 0 && ret[0] != '<';
+
+						// We merge adjacent text nodes, otherwise each piece would be printed
+						// on a new line.
+						if (lastWasText && isText) {
+							pieces[pieces.length - 1] += ret;
+						} else {
+							pieces.push(ret);
+						}
+
+						lastWasText = isText;
+					} else {
+						pieces.push(ret);
+					}
+				}
+			}
+		}
+		if (pretty && hasLarge) {
+			for (let i = pieces.length; i--; ) {
+				pieces[i] = '\n' + indentChar + indent(pieces[i], indentChar);
+			}
+		}
+	}
+
+	if (pieces.length || html) {
+		s = s + pieces.join('');
+	} else if (opts && opts.xml) {
+		return s.substring(0, s.length - 1) + ' />';
+	}
+
+	if (isVoid && !children && !html) {
+		s = s.replace(/>$/, ' />');
+	} else {
+		if (pretty && ~s.indexOf('\n')) s = s + '\n';
+		s = s + `</${nodeName}>`;
+	}
+
+	return s;
+}
+
+function getComponentName(component) {
+	return (
+		component.displayName ||
+		(component !== Function && component.name) ||
+		getFallbackComponentName(component)
+	);
+}
+
+function getFallbackComponentName(component) {
+	let str = Function.prototype.toString.call(component),
+		name = (str.match(/^\s*function\s+([^( ]+)/) || '')[1];
+	if (!name) {
+		// search for an existing indexed name for the given component:
+		let index = -1;
+		for (let i = UNNAMED.length; i--; ) {
+			if (UNNAMED[i] === component) {
+				index = i;
+				break;
+			}
+		}
+		// not found, create a new indexed name:
+		if (index < 0) {
+			index = UNNAMED.push(component) - 1;
+		}
+		name = `UnnamedComponent${index}`;
+	}
+	return name;
+}