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var assert = require('assert'); var traverse = require('traverse'); exports.stop = function () { var visits = 0; traverse('abcdefghij'.split('')).forEach(function (node) { if (typeof node === 'string') { visits ++; if (node === 'e') this.stop() } }); assert.equal(visits, 5); }; exports.stopMap = function () { var s = traverse('abcdefghij'.split('')).map(function (node) { if (typeof node === 'string') { if (node === 'e') this.stop() return node.toUpperCase(); } }).join(''); assert.equal(s, 'ABCDEfghij'); }; exports.stopReduce = function () { var obj = { a : [ 4, 5 ], b : [ 6, [ 7, 8, 9 ] ] }; var xs = traverse(obj).reduce(function (acc, node) { if (this.isLeaf) { if (node === 7) this.stop(); else acc.push(node) } return acc; }, []); assert.deepEqual(xs, [ 4, 5, 6 ]); };
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