/
NewExpression.ts
73 lines (66 loc) · 2.29 KB
/
NewExpression.ts
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import MagicString from 'magic-string';
import type { NormalizedTreeshakingOptions } from '../../rollup/types';
import { renderCallArguments } from '../../utils/renderCallArguments';
import { RenderOptions } from '../../utils/renderHelpers';
import type { CallOptions } from '../CallOptions';
import type { HasEffectsContext } from '../ExecutionContext';
import { InclusionContext } from '../ExecutionContext';
import { EMPTY_PATH, type ObjectPath, UNKNOWN_PATH } from '../utils/PathTracker';
import type * as NodeType from './NodeType';
import { type ExpressionNode, IncludeChildren, NodeBase } from './shared/Node';
export default class NewExpression extends NodeBase {
declare arguments: ExpressionNode[];
declare callee: ExpressionNode;
declare type: NodeType.tNewExpression;
private declare callOptions: CallOptions;
hasEffects(context: HasEffectsContext): boolean {
try {
for (const argument of this.arguments) {
if (argument.hasEffects(context)) return true;
}
if (
(this.context.options.treeshake as NormalizedTreeshakingOptions).annotations &&
this.annotations
)
return false;
return (
this.callee.hasEffects(context) ||
this.callee.hasEffectsWhenCalledAtPath(EMPTY_PATH, this.callOptions, context)
);
} finally {
if (!this.deoptimized) this.applyDeoptimizations();
}
}
hasEffectsWhenAccessedAtPath(path: ObjectPath): boolean {
return path.length > 0;
}
include(context: InclusionContext, includeChildrenRecursively: IncludeChildren): void {
if (!this.deoptimized) this.applyDeoptimizations();
if (includeChildrenRecursively) {
super.include(context, includeChildrenRecursively);
} else {
this.included = true;
this.callee.include(context, false);
}
this.callee.includeCallArguments(context, this.arguments);
}
initialise(): void {
this.callOptions = {
args: this.arguments,
thisParam: null,
withNew: true
};
}
render(code: MagicString, options: RenderOptions) {
this.callee.render(code, options);
renderCallArguments(code, options, this);
}
protected applyDeoptimizations(): void {
this.deoptimized = true;
for (const argument of this.arguments) {
// This will make sure all properties of parameters behave as "unknown"
argument.deoptimizePath(UNKNOWN_PATH);
}
this.context.requestTreeshakingPass();
}
}