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Added JSON support to BigNumber (#1010).

This commit is contained in:
Richard Moore 2020-08-24 23:15:03 -04:00
parent 17fdca8994
commit 8facc1a530
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GPG Key ID: 665176BE8E9DC651
1 changed files with 32 additions and 11 deletions
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43
packages/bignumber/src.ts/bignumber.ts
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@ -198,6 +198,10 @@ export class BigNumber implements Hexable {
return this._hex;
}
toJSON(key?: string): any {
return { type: "BigNumber", hex: this.toHexString() };
}
static from(value: any): BigNumber {
if (value instanceof BigNumber) { return value; }
@ -225,22 +229,39 @@ export class BigNumber implements Hexable {
return BigNumber.from(String(value));
}
if (typeof(value) === "bigint") {
return BigNumber.from((<any>value).toString());
const anyValue = <any>value;
if (typeof(anyValue) === "bigint") {
return BigNumber.from(anyValue.toString());
}
if (isBytes(value)) {
return BigNumber.from(hexlify(value));
if (isBytes(anyValue)) {
return BigNumber.from(hexlify(anyValue));
}
if ((<any>value)._hex && isHexString((<any>value)._hex)) {
return BigNumber.from((<any>value)._hex);
}
if (anyValue) {
if ((<any>value).toHexString) {
value = (<any>value).toHexString();
if (typeof(value) === "string") {
return BigNumber.from(value);
// Hexable interface (takes piority)
if (anyValue.toHexString) {
const hex = anyValue.toHexString();
if (typeof(hex) === "string") {
return BigNumber.from(hex);
}
} else {
// For now, handle legacy JSON-ified values (goes away in v6)
let hex = anyValue._hex;
// New-form JSON
if (hex == null && anyValue.type === "BigNumber") {
hex = anyValue.hex;
}
if (typeof(hex) === "string") {
if (isHexString(hex) || (hex[0] === "-" && isHexString(hex.substring(1)))) {
return BigNumber.from(hex);
}
}
}
}