polymer-analyzer
Version:
Static analysis for Web Components
159 lines • 8.66 kB
JavaScript
;
/**
* @license
* Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
* This code may only be used under the BSD style license found at
* http://polymer.github.io/LICENSE.txt
* The complete set of authors may be found at
* http://polymer.github.io/AUTHORS.txt
* The complete set of contributors may be found at
* http://polymer.github.io/CONTRIBUTORS.txt
* Code distributed by Google as part of the polymer project is also
* subject to an additional IP rights grant found at
* http://polymer.github.io/PATENTS.txt
*/
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
const whatwg_url_1 = require("whatwg-url");
const model_1 = require("../model/model");
const esutil = require("./esutil");
const resolve_specifier_node_1 = require("./resolve-specifier-node");
const isWindows = require("is-windows");
const isPathSpecifier = (s) => /^\.{0,2}\//.test(s);
class ScannedJavascriptImport extends model_1.ScannedImport {
constructor(url, sourceRange, urlSourceRange, ast, astNodePath, lazy, originalSpecifier, statementAst) {
super('js-import', url, sourceRange, urlSourceRange, ast, lazy);
this.specifier = originalSpecifier;
this.statementAst = statementAst;
this.astNode = ast;
this.astNodePath = astNodePath;
}
constructImport(resolvedUrl, relativeUrl, importedDocument, _containingDocument) {
return new JavascriptImport(resolvedUrl, relativeUrl, this.type, importedDocument, this.sourceRange, this.urlSourceRange, this.astNode, this.astNodePath, this.warnings, this.lazy, this.specifier, this.statementAst);
}
}
exports.ScannedJavascriptImport = ScannedJavascriptImport;
class JavascriptImport extends model_1.Import {
constructor(url, originalUrl, type, document, sourceRange, urlSourceRange, ast, astNodePath, warnings, lazy, specifier, statementAst) {
super(url, originalUrl, type, document, sourceRange, urlSourceRange, ast, warnings, lazy);
this.specifier = specifier;
this.statementAst = statementAst;
this.astNode = ast;
this.astNodePath = astNodePath;
}
}
exports.JavascriptImport = JavascriptImport;
class JavaScriptImportScanner {
constructor(options) {
this.moduleResolution = options && options.moduleResolution;
}
scan(document, visit) {
return __awaiter(this, void 0, void 0, function* () {
const imports = [];
const warnings = [];
const scanner = this;
yield visit({
enterCallExpression(node, _, path) {
// TODO(usergenic): There's no babel.Import type or babel.isImport()
// function right now, we have to just check the type property
// here until there is; please change to use babel.isImport(node.callee)
// once it is a thing.
if (node.callee.type !== 'Import') {
return;
}
if (node.arguments.length !== 1) {
warnings.push(new model_1.Warning({
message: 'Malformed import',
sourceRange: document.sourceRangeForNode(node),
severity: model_1.Severity.WARNING,
code: 'malformed-import',
parsedDocument: document,
}));
return;
}
const arg = node.arguments[0];
if (arg.type !== 'StringLiteral') {
warnings.push(new model_1.Warning({
message: 'Cannot analyze dynamic imports with non-literal arguments',
sourceRange: document.sourceRangeForNode(node),
severity: model_1.Severity.WARNING,
code: 'non-literal-import',
parsedDocument: document,
}));
return;
}
const specifier = arg.value;
imports.push(new ScannedJavascriptImport(scanner._resolveSpecifier(specifier, document, node, warnings), document.sourceRangeForNode(node), document.sourceRangeForNode(node.callee), { language: 'js', node, containingDocument: document }, path, true, specifier, esutil.getCanonicalStatement(path)));
},
enterImportDeclaration(node, _, path) {
const specifier = node.source.value;
imports.push(new ScannedJavascriptImport(scanner._resolveSpecifier(specifier, document, node, warnings), document.sourceRangeForNode(node), document.sourceRangeForNode(node.source), { language: 'js', node, containingDocument: document }, path, false, specifier, esutil.getCanonicalStatement(path)));
},
enterExportAllDeclaration(node, _parent, path) {
const specifier = node.source.value;
imports.push(new ScannedJavascriptImport(scanner._resolveSpecifier(specifier, document, node, warnings), document.sourceRangeForNode(node), document.sourceRangeForNode(node.source), { language: 'js', node, containingDocument: document }, path, false, specifier, esutil.getCanonicalStatement(path)));
},
enterExportNamedDeclaration(node, _parent, path) {
if (node.source == null) {
return;
}
const specifier = node.source.value;
imports.push(new ScannedJavascriptImport(scanner._resolveSpecifier(specifier, document, node, warnings), document.sourceRangeForNode(node), document.sourceRangeForNode(node.source), { language: 'js', node, containingDocument: document }, path, false, specifier, esutil.getCanonicalStatement(path)));
}
});
return { features: imports, warnings };
});
}
_resolveSpecifier(specifier, document, node, warnings) {
if (whatwg_url_1.parseURL(specifier) !== null) {
return specifier;
}
const documentURL = new whatwg_url_1.URL(document.baseUrl);
if (documentURL.protocol !== 'file:') {
warnings.push(new model_1.Warning({
message: 'Cannot resolve module specifier in non-local document',
sourceRange: document.sourceRangeForNode(node),
severity: model_1.Severity.WARNING,
code: 'cant-resolve-module-specifier',
parsedDocument: document,
}));
return undefined;
}
let documentPath = decodeURIComponent(documentURL.pathname);
if (isWindows() && documentPath.startsWith('/')) {
documentPath = documentPath.substring(1);
}
if (this.moduleResolution === 'node') {
try {
// TODO (justinfagnani): we need to pass packageName and componentDir,
// or maybe the UrlResolver, to get correct relative URLs for
// named imports from the root package to its dependencies
return resolve_specifier_node_1.resolve(specifier, documentPath);
}
catch (e) {
// If the specifier was a name, we'll emit a warning below.
}
}
if (isPathSpecifier(specifier)) {
return specifier;
}
warnings.push(new model_1.Warning({
message: 'Cannot resolve module specifier with resolution algorithm: ' +
(this.moduleResolution || 'none'),
sourceRange: document.sourceRangeForNode(node),
severity: model_1.Severity.WARNING,
code: 'cant-resolve-module-specifier',
parsedDocument: document,
}));
return undefined;
}
}
exports.JavaScriptImportScanner = JavaScriptImportScanner;
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