Edit File: RequireEnsureDependenciesBlockParserPlugin.js
/* MIT License http://www.opensource.org/licenses/mit-license.php Author Tobias Koppers @sokra */ "use strict"; const RequireEnsureDependenciesBlock = require("./RequireEnsureDependenciesBlock"); const RequireEnsureItemDependency = require("./RequireEnsureItemDependency"); const getFunctionExpression = require("./getFunctionExpression"); module.exports = class RequireEnsureDependenciesBlockParserPlugin { apply(parser) { parser.plugin("call require.ensure", expr => { let chunkName = null; let chunkNameRange = null; let errorExpressionArg = null; let errorExpression = null; switch(expr.arguments.length) { case 4: { const chunkNameExpr = parser.evaluateExpression(expr.arguments[3]); if(!chunkNameExpr.isString()) return; chunkNameRange = chunkNameExpr.range; chunkName = chunkNameExpr.string; } // falls through case 3: { errorExpressionArg = expr.arguments[2]; errorExpression = getFunctionExpression(errorExpressionArg); if(!errorExpression && !chunkName) { const chunkNameExpr = parser.evaluateExpression(expr.arguments[2]); if(!chunkNameExpr.isString()) return; chunkNameRange = chunkNameExpr.range; chunkName = chunkNameExpr.string; } } // falls through case 2: { const dependenciesExpr = parser.evaluateExpression(expr.arguments[0]); const dependenciesItems = dependenciesExpr.isArray() ? dependenciesExpr.items : [dependenciesExpr]; const successExpressionArg = expr.arguments[1]; const successExpression = getFunctionExpression(successExpressionArg); if(successExpression) { parser.walkExpressions(successExpression.expressions); } if(errorExpression) { parser.walkExpressions(errorExpression.expressions); } const dep = new RequireEnsureDependenciesBlock(expr, successExpression ? successExpression.fn : successExpressionArg, errorExpression ? errorExpression.fn : errorExpressionArg, chunkName, chunkNameRange, parser.state.module, expr.loc); const old = parser.state.current; parser.state.current = dep; try { let failed = false; parser.inScope([], () => { dependenciesItems.forEach(ee => { if(ee.isString()) { const edep = new RequireEnsureItemDependency(ee.string, ee.range); edep.loc = dep.loc; dep.addDependency(edep); } else { failed = true; } }); }); if(failed) { return; } if(successExpression) { if(successExpression.fn.body.type === "BlockStatement") parser.walkStatement(successExpression.fn.body); else parser.walkExpression(successExpression.fn.body); } old.addBlock(dep); } finally { parser.state.current = old; } if(!successExpression) { parser.walkExpression(successExpressionArg); } if(errorExpression) { if(errorExpression.fn.body.type === "BlockStatement") parser.walkStatement(errorExpression.fn.body); else parser.walkExpression(errorExpression.fn.body); } else if(errorExpressionArg) { parser.walkExpression(errorExpressionArg); } return true; } } }); } };
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