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minifyfromhtml/node_modules/babel-plugin-minify-infinity/lib/index.js
2018-05-05 13:54:07 +02:00

40 lines
794 B
JavaScript

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