37 lines
793 B
JavaScript
37 lines
793 B
JavaScript
"use strict";
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module.exports = function (_ref) {
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var t = _ref.types;
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var INFINITY = t.binaryExpression("/", t.numericLiteral(1), t.numericLiteral(0));
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return {
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name: "minify-infinity",
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visitor: {
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// Infinity -> 1 / 0
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Identifier(path) {
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if (path.node.name !== "Infinity") {
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return;
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}
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// It's a referenced identifier
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if (path.scope.getBinding("Infinity")) {
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return;
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}
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if (path.parentPath.isObjectProperty({ key: path.node })) {
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return;
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}
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if (path.parentPath.isMemberExpression()) {
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return;
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}
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if (path.isLVal() && !path.parentPath.isExpressionStatement()) {
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return;
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}
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path.replaceWith(INFINITY);
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}
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}
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};
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}; |