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index.ts
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index.ts
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import type * as ts from 'typescript';
import { decorateLanguageService } from '@volar/typescript/lib/node/decorateLanguageService';
import { decorateLanguageServiceHost, searchExternalFiles } from '@volar/typescript/lib/node/decorateLanguageServiceHost';
import { createFileRegistry, resolveCommonLanguageId } from '@vue/language-core';
import { projects } from './lib/utils';
import * as vue from '@vue/language-core';
import { startNamedPipeServer } from './lib/server';
import { _getComponentNames } from './lib/requests/componentInfos';
const windowsPathReg = /\\/g;
const externalFiles = new WeakMap<ts.server.Project, string[]>();
const projectExternalFileExtensions = new WeakMap<ts.server.Project, string[]>();
const decoratedLanguageServices = new WeakSet<ts.LanguageService>();
const decoratedLanguageServiceHosts = new WeakSet<ts.LanguageServiceHost>();
export = createLanguageServicePlugin();
function createLanguageServicePlugin(): ts.server.PluginModuleFactory {
return modules => {
const { typescript: ts } = modules;
const pluginModule: ts.server.PluginModule = {
create(info) {
if (
!decoratedLanguageServices.has(info.languageService)
&& !decoratedLanguageServiceHosts.has(info.languageServiceHost)
) {
decoratedLanguageServices.add(info.languageService);
decoratedLanguageServiceHosts.add(info.languageServiceHost);
const vueOptions = vue.resolveVueCompilerOptions(getVueCompilerOptions());
const languagePlugin = vue.createVueLanguagePlugin(
ts,
id => id,
info.languageServiceHost.getCompilationSettings(),
vueOptions,
);
const extensions = languagePlugin.typescript?.extraFileExtensions.map(ext => '.' + ext.extension) ?? [];
const getScriptSnapshot = info.languageServiceHost.getScriptSnapshot.bind(info.languageServiceHost);
const files = createFileRegistry(
[languagePlugin],
ts.sys.useCaseSensitiveFileNames,
fileName => {
const snapshot = getScriptSnapshot(fileName);
if (snapshot) {
files.set(fileName, resolveCommonLanguageId(fileName), snapshot);
}
else {
files.delete(fileName);
}
}
);
projectExternalFileExtensions.set(info.project, extensions);
projects.set(info.project, {
info,
files,
ts,
vueOptions,
});
decorateLanguageService(files, info.languageService);
decorateLanguageServiceHost(files, info.languageServiceHost, ts);
startNamedPipeServer(info.project.projectKind);
const getCompletionsAtPosition = info.languageService.getCompletionsAtPosition;
const getEncodedSemanticClassifications = info.languageService.getEncodedSemanticClassifications;
info.languageService.getCompletionsAtPosition = (fileName, position, options) => {
const result = getCompletionsAtPosition(fileName, position, options);
if (result) {
result.entries = result.entries.filter(entry => entry.name.indexOf('__VLS_') === -1);
}
return result;
};
info.languageService.getEncodedSemanticClassifications = (fileName, span, format) => {
const result = getEncodedSemanticClassifications(fileName, span, format);
const file = files.get(fileName);
if (
file?.generated?.code instanceof vue.VueGeneratedCode
&& file.generated.code.sfc.template
) {
const validComponentNames = _getComponentNames(ts, info.languageService, file.generated.code, vueOptions);
const components = new Set([
...validComponentNames,
...validComponentNames.map(vue.hyphenateTag),
]);
const { template } = file.generated.code.sfc;
const spanTemplateRange = [
span.start - template.startTagEnd,
span.start + span.length - template.startTagEnd,
] as const;
template.ast?.children.forEach(function visit(node) {
if (node.loc.end.offset <= spanTemplateRange[0] || node.loc.start.offset >= spanTemplateRange[1]) {
return;
}
if (node.type === 1 satisfies vue.CompilerDOM.NodeTypes.ELEMENT) {
if (components.has(node.tag)) {
result.spans.push(
node.loc.start.offset + node.loc.source.indexOf(node.tag) + template.startTagEnd,
node.tag.length,
256, // class
);
if (template.lang === 'html' && !node.isSelfClosing) {
result.spans.push(
node.loc.start.offset + node.loc.source.lastIndexOf(node.tag) + template.startTagEnd,
node.tag.length,
256, // class
);
}
}
for (const child of node.children) {
visit(child);
}
}
else if (node.type === 9 satisfies vue.CompilerDOM.NodeTypes.IF) {
for (const branch of node.branches) {
for (const child of branch.children) {
visit(child);
}
}
}
else if (node.type === 11 satisfies vue.CompilerDOM.NodeTypes.FOR) {
for (const child of node.children) {
visit(child);
}
}
});
}
return result;
};
}
return info.languageService;
function getVueCompilerOptions() {
if (info.project.projectKind === ts.server.ProjectKind.Configured) {
const tsconfig = info.project.getProjectName();
return vue.createParsedCommandLine(ts, ts.sys, tsconfig.replace(windowsPathReg, '/')).vueOptions;
}
else {
return vue.createParsedCommandLineByJson(ts, ts.sys, info.languageServiceHost.getCurrentDirectory(), {}).vueOptions;
}
}
},
getExternalFiles(project, updateLevel = 0) {
if (
updateLevel >= (1 satisfies ts.ProgramUpdateLevel.RootNamesAndUpdate)
|| !externalFiles.has(project)
) {
const oldFiles = externalFiles.get(project);
const newFiles = searchExternalFiles(ts, project, projectExternalFileExtensions.get(project)!);
externalFiles.set(project, newFiles);
if (oldFiles && !arrayItemsEqual(oldFiles, newFiles)) {
project.refreshDiagnostics();
}
}
return externalFiles.get(project)!;
},
};
return pluginModule;
};
}
function arrayItemsEqual(a: string[], b: string[]) {
if (a.length !== b.length) {
return false;
}
const set = new Set(a);
for (const file of b) {
if (!set.has(file)) {
return false;
}
}
return true;
}