1 | import isObject from './isObject.js';
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2 | import isSymbol from './isSymbol.js';
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4 |
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5 | var NAN = 0 / 0;
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8 | var reTrim = /^\s+|\s+$/g;
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11 | var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;
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14 | var reIsBinary = /^0b[01]+$/i;
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16 |
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17 | var reIsOctal = /^0o[0-7]+$/i;
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19 |
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20 | var freeParseInt = parseInt;
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44 |
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45 | function toNumber(value) {
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46 | if (typeof value == 'number') {
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47 | return value;
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48 | }
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49 | if (isSymbol(value)) {
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50 | return NAN;
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51 | }
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52 | if (isObject(value)) {
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53 | var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
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54 | value = isObject(other) ? (other + '') : other;
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55 | }
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56 | if (typeof value != 'string') {
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57 | return value === 0 ? value : +value;
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58 | }
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59 | value = value.replace(reTrim, '');
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60 | var isBinary = reIsBinary.test(value);
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61 | return (isBinary || reIsOctal.test(value))
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62 | ? freeParseInt(value.slice(2), isBinary ? 2 : 8)
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63 | : (reIsBadHex.test(value) ? NAN : +value);
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64 | }
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65 |
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66 | export default toNumber;
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