@ngtools/webpack
Version:
Webpack plugin that AoT compiles your Angular components and modules.
117 lines • 13.5 kB
JavaScript
;
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.removeIvyJitSupportCalls = void 0;
const ts = __importStar(require("typescript"));
const elide_imports_1 = require("./elide_imports");
function removeIvyJitSupportCalls(classMetadata, ngModuleScope, getTypeChecker) {
return (context) => {
const removedNodes = [];
const visitNode = (node) => {
const innerStatement = ts.isExpressionStatement(node) && getIifeStatement(node);
if (innerStatement) {
if (ngModuleScope &&
ts.isBinaryExpression(innerStatement.expression) &&
isIvyPrivateCallExpression(innerStatement.expression.right, 'ɵɵsetNgModuleScope')) {
removedNodes.push(innerStatement);
return undefined;
}
if (classMetadata) {
const expression = ts.isBinaryExpression(innerStatement.expression)
? innerStatement.expression.right
: innerStatement.expression;
if (isIvyPrivateCallExpression(expression, 'ɵsetClassMetadata')) {
removedNodes.push(innerStatement);
return undefined;
}
}
}
return ts.visitEachChild(node, visitNode, context);
};
return (sourceFile) => {
let updatedSourceFile = ts.visitEachChild(sourceFile, visitNode, context);
if (removedNodes.length > 0) {
// Remove any unused imports
const importRemovals = (0, elide_imports_1.elideImports)(updatedSourceFile, removedNodes, getTypeChecker, context.getCompilerOptions());
if (importRemovals.size > 0) {
updatedSourceFile = ts.visitEachChild(updatedSourceFile, function visitForRemoval(node) {
return importRemovals.has(node)
? undefined
: ts.visitEachChild(node, visitForRemoval, context);
}, context);
}
}
return updatedSourceFile;
};
};
}
exports.removeIvyJitSupportCalls = removeIvyJitSupportCalls;
// Each Ivy private call expression is inside an IIFE
function getIifeStatement(exprStmt) {
const expression = exprStmt.expression;
if (!expression || !ts.isCallExpression(expression) || expression.arguments.length !== 0) {
return null;
}
const parenExpr = expression;
if (!ts.isParenthesizedExpression(parenExpr.expression)) {
return null;
}
const funExpr = parenExpr.expression.expression;
if (!ts.isFunctionExpression(funExpr)) {
return null;
}
const innerStmts = funExpr.body.statements;
if (innerStmts.length !== 1) {
return null;
}
const innerExprStmt = innerStmts[0];
if (!ts.isExpressionStatement(innerExprStmt)) {
return null;
}
return innerExprStmt;
}
function isIvyPrivateCallExpression(expression, name) {
// Now we're in the IIFE and have the inner expression statement. We can check if it matches
// a private Ivy call.
if (!ts.isCallExpression(expression)) {
return false;
}
const propAccExpr = expression.expression;
if (!ts.isPropertyAccessExpression(propAccExpr)) {
return false;
}
if (propAccExpr.name.text != name) {
return false;
}
return true;
}
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innerStatement.expression.right\n            : innerStatement.expression;\n          if (isIvyPrivateCallExpression(expression, 'ɵsetClassMetadata')) {\n            removedNodes.push(innerStatement);\n\n            return undefined;\n          }\n        }\n      }\n\n      return ts.visitEachChild(node, visitNode, context);\n    };\n\n    return (sourceFile: ts.SourceFile) => {\n      let updatedSourceFile = ts.visitEachChild(sourceFile, visitNode, context);\n\n      if (removedNodes.length > 0) {\n        // Remove any unused imports\n        const importRemovals = elideImports(\n          updatedSourceFile,\n          removedNodes,\n          getTypeChecker,\n          context.getCompilerOptions(),\n        );\n        if (importRemovals.size > 0) {\n          updatedSourceFile = ts.visitEachChild(\n            updatedSourceFile,\n            function visitForRemoval(node): ts.Node | undefined {\n              return importRemovals.has(node)\n                ? undefined\n                : ts.visitEachChild(node, visitForRemoval, context);\n            },\n            context,\n          );\n        }\n      }\n\n      return updatedSourceFile;\n    };\n  };\n}\n\n// Each Ivy private call expression is inside an IIFE\nfunction getIifeStatement(exprStmt: ts.ExpressionStatement): null | ts.ExpressionStatement {\n  const expression = exprStmt.expression;\n  if (!expression || !ts.isCallExpression(expression) || expression.arguments.length !== 0) {\n    return null;\n  }\n\n  const parenExpr = expression;\n  if (!ts.isParenthesizedExpression(parenExpr.expression)) {\n    return null;\n  }\n\n  const funExpr = parenExpr.expression.expression;\n  if (!ts.isFunctionExpression(funExpr)) {\n    return null;\n  }\n\n  const innerStmts = funExpr.body.statements;\n  if (innerStmts.length !== 1) {\n    return null;\n  }\n\n  const innerExprStmt = innerStmts[0];\n  if (!ts.isExpressionStatement(innerExprStmt)) {\n    return null;\n  }\n\n  return innerExprStmt;\n}\n\nfunction isIvyPrivateCallExpression(expression: ts.Expression, name: string) {\n  // Now we're in the IIFE and have the inner expression statement. We can check if it matches\n  // a private Ivy call.\n  if (!ts.isCallExpression(expression)) {\n    return false;\n  }\n\n  const propAccExpr = expression.expression;\n  if (!ts.isPropertyAccessExpression(propAccExpr)) {\n    return false;\n  }\n\n  if (propAccExpr.name.text != name) {\n    return false;\n  }\n\n  return true;\n}\n"]}