RequireResolveDependencyParserPlugin.js
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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
const RequireResolveDependency = require("./RequireResolveDependency");
const RequireResolveContextDependency = require("./RequireResolveContextDependency");
const RequireResolveHeaderDependency = require("./RequireResolveHeaderDependency");
const ContextDependencyHelpers = require("./ContextDependencyHelpers");
class RequireResolveDependencyParserPlugin {
constructor(options) {
this.options = options;
}
apply(parser) {
const options = this.options;
parser.plugin("call require.resolve", (expr) => {
return parser.applyPluginsBailResult("call require.resolve(Weak)", expr, false);
});
parser.plugin("call require.resolveWeak", (expr) => {
return parser.applyPluginsBailResult("call require.resolve(Weak)", expr, true);
});
parser.plugin("call require.resolve(Weak)", (expr, weak) => {
if(expr.arguments.length !== 1) return;
const param = parser.evaluateExpression(expr.arguments[0]);
if(param.isConditional()) {
param.options.forEach((option) => {
const result = parser.applyPluginsBailResult("call require.resolve(Weak):item", expr, option, weak);
if(result === undefined) {
parser.applyPluginsBailResult("call require.resolve(Weak):context", expr, option, weak);
}
});
const dep = new RequireResolveHeaderDependency(expr.callee.range);
dep.loc = expr.loc;
parser.state.current.addDependency(dep);
return true;
} else {
const result = parser.applyPluginsBailResult("call require.resolve(Weak):item", expr, param, weak);
if(result === undefined) {
parser.applyPluginsBailResult("call require.resolve(Weak):context", expr, param, weak);
}
const dep = new RequireResolveHeaderDependency(expr.callee.range);
dep.loc = expr.loc;
parser.state.current.addDependency(dep);
return true;
}
});
parser.plugin("call require.resolve(Weak):item", (expr, param, weak) => {
if(param.isString()) {
const dep = new RequireResolveDependency(param.string, param.range);
dep.loc = expr.loc;
dep.optional = !!parser.scope.inTry;
dep.weak = weak;
parser.state.current.addDependency(dep);
return true;
}
});
parser.plugin("call require.resolve(Weak):context", (expr, param, weak) => {
const dep = ContextDependencyHelpers.create(RequireResolveContextDependency, param.range, param, expr, options);
if(!dep) return;
dep.loc = expr.loc;
dep.optional = !!parser.scope.inTry;
dep.async = weak ? "weak" : false;
parser.state.current.addDependency(dep);
return true;
});
}
}
module.exports = RequireResolveDependencyParserPlugin;