// While filters are precompiled, pseudos get called when they are needed export const pseudos = { empty(elem, { adapter }) { return !adapter.getChildren(elem).some((elem) => // FIXME: `getText` call is potentially expensive. adapter.isTag(elem) || adapter.getText(elem) !== ""); }, "first-child"(elem, { adapter, equals }) { if (adapter.prevElementSibling) { return adapter.prevElementSibling(elem) == null; } const firstChild = adapter .getSiblings(elem) .find((elem) => adapter.isTag(elem)); return firstChild != null && equals(elem, firstChild); }, "last-child"(elem, { adapter, equals }) { const siblings = adapter.getSiblings(elem); for (let i = siblings.length - 1; i >= 0; i--) { if (equals(elem, siblings[i])) return true; if (adapter.isTag(siblings[i])) break; } return false; }, "first-of-type"(elem, { adapter, equals }) { const siblings = adapter.getSiblings(elem); const elemName = adapter.getName(elem); for (let i = 0; i < siblings.length; i++) { const currentSibling = siblings[i]; if (equals(elem, currentSibling)) return true; if (adapter.isTag(currentSibling) && adapter.getName(currentSibling) === elemName) { break; } } return false; }, "last-of-type"(elem, { adapter, equals }) { const siblings = adapter.getSiblings(elem); const elemName = adapter.getName(elem); for (let i = siblings.length - 1; i >= 0; i--) { const currentSibling = siblings[i]; if (equals(elem, currentSibling)) return true; if (adapter.isTag(currentSibling) && adapter.getName(currentSibling) === elemName) { break; } } return false; }, "only-of-type"(elem, { adapter, equals }) { const elemName = adapter.getName(elem); return adapter .getSiblings(elem) .every((sibling) => equals(elem, sibling) || !adapter.isTag(sibling) || adapter.getName(sibling) !== elemName); }, "only-child"(elem, { adapter, equals }) { return adapter .getSiblings(elem) .every((sibling) => equals(elem, sibling) || !adapter.isTag(sibling)); }, }; export function verifyPseudoArgs(func, name, subselect, argIndex) { if (subselect === null) { if (func.length > argIndex) { throw new Error(`Pseudo-class :${name} requires an argument`); } } else if (func.length === argIndex) { throw new Error(`Pseudo-class :${name} doesn't have any arguments`); } } //# sourceMappingURL=pseudos.js.map