react-native - 需要未知模块Object.assign，在堆栈跟踪中使用ReactNativeTextComponent

我升级到最新的react-native（0.23.1）并开始收到错误：

即使降级后我仍然会收到此错误，因此不确定react-native是否是原因，或者是我的另一个依赖项。我通过搜索Google找不到此错误消息。

我也尝试过安装package main import ( "fmt" "math" "strconv" ) func main() { fmt.Printf("0b%b\n", 255) //0b11111111 fmt.Printf("%b\n", 1.0) //4503599627370496p-52 fmt.Printf("%#X\n", 4503599627370496) //0X10000000000000 //float64: 1.0 = binary: 0X3FF0000000000000 //so 4503599627370496*2**-52 =("1"+"Fraction")*2**-52 //=0X10 0000 0000 0000*2**-52= 2**52 * 2**-52 = 2**0 = 1= significand //2**52=0x10 0000 0000 0000 //1bit=sign 11bit=exponent-biased 52bit)=64 bit: fmt.Printf("%#X\n", math.Float64bits(1.0)) //1.0=0X3FF0000000000000 //Exp: 0x3FF=1023=E(0) :bias=1023 Emin=1 Emax=2046 Exp=pow(2,0x3FF - 1023)=pow(2,0)=1 //significant: 1.mantisa (53bit nice!) 1.0000000000000 //1.0000000000000002, the smallest number > 1 fmt.Printf("%#X\n", math.Float64bits(1.0000000000000002)) //0X3FF0000000000001 // 1.0000000000000004, the next numer after 1.0000000000000002 fmt.Printf("%#X\n", math.Float64bits(1.0000000000000004)) //0X3FF0000000000002 fmt.Printf("%#X\n", math.Float64bits(2.0)) //0X4000000000000000 fmt.Printf("%#X\n", math.Float64bits(-2.0)) //0XC000000000000000 // Min subnormal positive double fmt.Printf("%v\n", math.Float64frombits(1)) //5e-324 fmt.Printf("%#X\n", math.Float64bits(5e-324)) //0X0000000000000001 //Exp(2,-1022-52)=Exp(2,-1074)=5e-324 //Max subnormal double fmt.Printf("%v\n", math.Float64frombits(0x000fffffffffffff)) //2.225073858507201e-308 fmt.Printf("%v\n", math.Float64frombits(0X0000000000000000)) //0 fmt.Printf("%v\n", math.Float64frombits(0X8000000000000000)) //-0 fmt.Printf("%v\n", math.Float64frombits(0X7FF0000000000000)) //+Inf fmt.Printf("%v\n", math.Float64frombits(0XFFF0000000000000)) //-Inf fmt.Printf("%v\n", math.Float64frombits(0x7fffffffffffffff)) //NaN fmt.Printf("%#X\n%[1]b\n", math.Float64bits(0.1)) //0X3FB 999999999999A //0 1111111011 1001100110011001100110011001100110011001100110011010 fmt.Printf("%#X\n%[1]b\n", math.Float64bits(0.2)) //0X3FC999999999999A //11111111001001100110011001100110011001100110011001100110011010 fmt.Printf("%#X\n%[1]b\n", math.Float64bits(0.3)) //0X3FD3333333333333 //11111111010011001100110011001100110011001100110011001100110011 fmt.Println(1.0 / 3.0) //0.3333333333333333 //By default, 1/3 rounds down, instead of up like single precision, //because of the odd number of bits in the significand fmt.Printf("%#X\n%[1]b\n", math.Float64bits(1.0/3.0)) //0X3FD5555555555555 //11111111010101010101010101010101010101010101010101010101010101 /* Given the hexadecimal representation 3FD5 5555 5555 555516, Sign = 0 Exponent = 0x3FD = 1021 Exponent Bias = 1023 (constant value) Fraction = 5 5555 5555 555516 Value = 2(Exponent − Exponent Bias) × 1.Fraction // Note that Fraction must not be converted to decimal here = 2**−2 × (15 5555 5555 555516 × 2**−52) = 2**−54 × 15 5555 5555 555516 = 0.333333333333333314829616256247390992939472198486328125 ≈ 1/3 */ var f float64 = 0.1 var bits uint64 = math.Float64bits(f) //IEEE 754 binary representation of f fmt.Printf("%#X %[1]b\n", bits) //0X3FB999999999999A 11111110111001100110011001100110011001100110011001100110011010 fmt.Printf("%b\n", f) //7205759403792794p-56 fmt.Printf("%b %b\n", 7205759403792794, -56) //11001100110011001100110011001100110011001100110011010 111000 fmt.Println(len("11001100110011001100110011001100110011001100110011010")) //text search in this text=> 53 bit right side // 1 11111110101 100011110110001111100111100101011000111010000110011 fmt.Printf("-: %b\n", math.Float64bits(-0.1e+308)) // so left bit is sign bit //1 111111110101 100011110110001111100111100101011000111010000110011 fmt.Printf("exp: %b\n", math.Float64bits(+0.1e-308)) //1 01110000001 010101110010011010001111110110101111 // 11Exponent bits // 12345678901 i, err := strconv.ParseInt("11111110101", 2, 64) //2037 fmt.Println("E", i-1023) //1014 fmt.Printf("%b\n", 0.2) //7205759403792794p-55 fmt.Printf("%b\n", 0.3) //5404319552844595p-54 n, err := fmt.Printf("%b %b\n", 1.0, math.Float64bits(1.0)) //4503599627370496p-52 11111111110000000000000000000000000000000000000000000000000000 fmt.Println(n, err) //84 <nil> //no err fmt.Printf("'%[1]*.[2]*[3]f'\n", 12, 4, 1234.1234) //' 1234.1234'但没有帮助。

我正在运行babel预设npm install object-assign。

需要未知模块Object.assign，在堆栈跟踪中使用ReactNativeTextComponent

2 个答案: