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-rw-r--r--node_modules/babel-plugin-minify-simplify/lib/logical-expression.js75
1 files changed, 0 insertions, 75 deletions
diff --git a/node_modules/babel-plugin-minify-simplify/lib/logical-expression.js b/node_modules/babel-plugin-minify-simplify/lib/logical-expression.js
deleted file mode 100644
index a91af230..00000000
--- a/node_modules/babel-plugin-minify-simplify/lib/logical-expression.js
+++ /dev/null
@@ -1,75 +0,0 @@
-"use strict";
-
-const h = require("./helpers");
-
-const PatternMatch = require("./pattern-match");
-
-const evaluate = require("babel-helper-evaluate-path");
-
-module.exports = t => {
- const OP_AND = input => input === "&&";
-
- const OP_OR = input => input === "||";
-
- function simplifyPatterns(path) {
- // cache of evaluate(path)
- const evaluateMemo = new Map();
-
- const TRUTHY = input => {
- // !NaN and !undefined are truthy
- // separate check here as they are considered impure by babel
- if (input.isUnaryExpression() && input.get("argument").isIdentifier()) {
- if (input.node.argument.name === "NaN" || input.node.argument.name === "undefined") {
- return true;
- }
- }
-
- const evalResult = evaluate(input);
- evaluateMemo.set(input, evalResult);
- return evalResult.confident && input.isPure() && evalResult.value;
- };
-
- const FALSY = input => {
- // NaN and undefined are falsy
- // separate check here as they are considered impure by babel
- if (input.isIdentifier()) {
- if (input.node.name === "NaN" || input.node.name === "undefined") {
- return true;
- }
- }
-
- const evalResult = evaluate(input);
- evaluateMemo.set(input, evalResult);
- return evalResult.confident && input.isPure() && !evalResult.value;
- };
-
- const _h$typeSymbols = h.typeSymbols(t),
- EX = _h$typeSymbols.Expression; // Convention:
- // [left, operator, right, handler(leftNode, rightNode)]
-
-
- const matcher = new PatternMatch([[TRUTHY, OP_AND, EX, (l, r) => r], [FALSY, OP_AND, EX, l => l], [TRUTHY, OP_OR, EX, l => l], [FALSY, OP_OR, EX, (l, r) => r]]);
- const left = path.get("left");
- const right = path.get("right");
- const operator = path.node.operator;
- const result = matcher.match([left, operator, right], h.isPatternMatchesPath(t));
-
- if (result.match) {
- // here we are sure that left.evaluate is always confident becuase
- // it satisfied one of TRUTHY/FALSY paths
- let value;
-
- if (evaluateMemo.has(left)) {
- value = evaluateMemo.get(left).value;
- } else {
- value = evaluate(left).value;
- }
-
- path.replaceWith(result.value(t.valueToNode(value), right.node));
- }
- }
-
- return {
- simplifyPatterns
- };
-}; \ No newline at end of file