@solana/fast-stable-stringify
Version:
Deterministic stringification for when performance and bundle size matters
77 lines (76 loc) • 2.03 kB
JavaScript
// src/index.ts
var objToString = Object.prototype.toString;
var objKeys = Object.keys || function(obj) {
const keys = [];
for (const name in obj) {
keys.push(name);
}
return keys;
};
function stringify(val, isArrayProp) {
let i, max, str, keys, key, propVal, toStr;
if (val === true) {
return "true";
}
if (val === false) {
return "false";
}
switch (typeof val) {
case "object":
if (val === null) {
return null;
} else if ("toJSON" in val && typeof val.toJSON === "function") {
return stringify(val.toJSON(), isArrayProp);
} else {
toStr = objToString.call(val);
if (toStr === "[object Array]") {
str = "[";
max = val.length - 1;
for (i = 0; i < max; i++) {
str += stringify(val[i], true) + ",";
}
if (max > -1) {
str += stringify(val[i], true);
}
return str + "]";
} else if (toStr === "[object Object]") {
keys = objKeys(val).sort();
max = keys.length;
str = "";
i = 0;
while (i < max) {
key = keys[i];
propVal = stringify(val[key], false);
if (propVal !== void 0) {
if (str) {
str += ",";
}
str += JSON.stringify(key) + ":" + propVal;
}
i++;
}
return "{" + str + "}";
} else {
return JSON.stringify(val);
}
}
case "function":
case "undefined":
return isArrayProp ? null : void 0;
case "bigint":
return `${val.toString()}n`;
case "string":
return JSON.stringify(val);
default:
return isFinite(val) ? val : null;
}
}
function index_default(val) {
const returnVal = stringify(val, false);
if (returnVal !== void 0) {
return "" + returnVal;
}
}
export { index_default as default };
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