81 lines
3.6 KiB
JavaScript
81 lines
3.6 KiB
JavaScript
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/**
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* @license
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* Copyright 2019 Google LLC
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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import { _$LH as p, noChange, } from './lit-html.js';
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// Contains either the minified or unminified `_$resolve` Directive method name.
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let resolveMethodName = null;
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/**
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* END USERS SHOULD NOT RELY ON THIS OBJECT.
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*
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* We currently do not make a mangled rollup build of the lit-ssr code. In order
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* to keep a number of (otherwise private) top-level exports mangled in the
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* client side code, we export a _$LH object containing those members (or
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* helper methods for accessing private fields of those members), and then
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* re-export them for use in lit-ssr. This keeps lit-ssr agnostic to whether the
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* client-side code is being used in `dev` mode or `prod` mode.
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* @private
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*/
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export const _$LH = {
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boundAttributeSuffix: p._boundAttributeSuffix,
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marker: p._marker,
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markerMatch: p._markerMatch,
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HTML_RESULT: p._HTML_RESULT,
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getTemplateHtml: p._getTemplateHtml,
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overrideDirectiveResolve: (directiveClass, resolveOverrideFn) => class extends directiveClass {
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_$resolve(_part, values) {
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return resolveOverrideFn(this, values);
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}
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},
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patchDirectiveResolve: (directiveClass, resolveOverrideFn) => {
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if (directiveClass.prototype._$resolve !== resolveOverrideFn) {
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resolveMethodName ??= directiveClass.prototype._$resolve
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.name;
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for (let proto = directiveClass.prototype; proto !== Object.prototype; proto = Object.getPrototypeOf(proto)) {
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if (proto.hasOwnProperty(resolveMethodName)) {
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proto[resolveMethodName] = resolveOverrideFn;
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return;
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}
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}
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// Nothing was patched which indicates an error. The most likely error is
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// that somehow both minified and unminified lit code passed through this
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// codepath. This is possible as lit-labs/ssr contains its own lit-html
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// module as a dependency for server rendering client Lit code. If a
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// client contains multiple duplicate Lit modules with minified and
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// unminified exports, we currently cannot handle both.
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throw new Error(`Internal error: It is possible that both dev mode and production mode` +
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` Lit was mixed together during SSR. Please comment on the issue: ` +
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`https://github.com/lit/lit/issues/4527`);
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}
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},
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setDirectiveClass(value, directiveClass) {
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// This property needs to remain unminified.
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value['_$litDirective$'] = directiveClass;
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},
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getAttributePartCommittedValue: (part, value, index) => {
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// Use the part setter to resolve directives/concatenate multiple parts
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// into a final value (captured by passing in a commitValue override)
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let committedValue = noChange;
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// Note that _commitValue need not be in `stableProperties` because this
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// method is only run on `AttributePart`s created by lit-ssr using the same
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// version of the library as this file
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part._commitValue = (value) => (committedValue = value);
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part._$setValue(value, part, index);
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return committedValue;
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},
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connectedDisconnectable: (props) => ({
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...props,
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_$isConnected: true,
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}),
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resolveDirective: p._resolveDirective,
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AttributePart: p._AttributePart,
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PropertyPart: p._PropertyPart,
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BooleanAttributePart: p._BooleanAttributePart,
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EventPart: p._EventPart,
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ElementPart: p._ElementPart,
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TemplateInstance: p._TemplateInstance,
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isIterable: p._isIterable,
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ChildPart: p._ChildPart,
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};
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//# sourceMappingURL=private-ssr-support.js.map
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