37 lines
976 B
JavaScript
37 lines
976 B
JavaScript
import type { NodePath } from "babel-traverse";
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import * as t from "babel-types";
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export default function bindifyDecorators(decorators: Array<NodePath>): Array<NodePath> {
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for (const decoratorPath of decorators) {
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const decorator = decoratorPath.node;
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const expression = decorator.expression;
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if (!t.isMemberExpression(expression)) continue;
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const temp = decoratorPath.scope.maybeGenerateMemoised(expression.object);
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let ref;
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const nodes = [];
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if (temp) {
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ref = temp;
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nodes.push(t.assignmentExpression("=", temp, expression.object));
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} else {
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ref = expression.object;
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}
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nodes.push(t.callExpression(
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t.memberExpression(
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t.memberExpression(ref, expression.property, expression.computed),
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t.identifier("bind")
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),
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[ref]
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));
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if (nodes.length === 1) {
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decorator.expression = nodes[0];
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} else {
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decorator.expression = t.sequenceExpression(nodes);
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}
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}
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}
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