effect
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The missing standard library for TypeScript, for writing production-grade software.
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JavaScript
import * as array_ from "../../Array.js";
import * as Predicate from "../../Predicate.js";
/** @internal */
export const getKeysForIndexSignature = (input, parameter) => {
switch (parameter._tag) {
case "StringKeyword":
case "TemplateLiteral":
return Object.keys(input);
case "SymbolKeyword":
return Object.getOwnPropertySymbols(input);
case "Refinement":
return getKeysForIndexSignature(input, parameter.from);
}
};
/**
* JavaScript does not store the insertion order of properties in a way that
* combines both string and symbol keys. The internal order groups string keys
* and symbol keys separately. Hence concatenating the keys is fine.
*
* @internal
*/
export const ownKeys = o => Object.keys(o).concat(Object.getOwnPropertySymbols(o));
/** @internal */
export const memoizeThunk = f => {
let done = false;
let a;
return () => {
if (done) {
return a;
}
a = f();
done = true;
return a;
};
};
/** @internal */
export const formatDate = date => {
try {
return date.toISOString();
} catch (e) {
return String(date);
}
};
/** @internal */
export const formatUnknown = u => {
if (Predicate.isString(u)) {
return JSON.stringify(u);
} else if (Predicate.isNumber(u) || u == null || Predicate.isBoolean(u) || Predicate.isSymbol(u)) {
return String(u);
} else if (Predicate.isDate(u)) {
return formatDate(u);
} else if (Predicate.isBigInt(u)) {
return String(u) + "n";
} else if (!array_.isArray(u) && Predicate.hasProperty(u, "toString") && Predicate.isFunction(u["toString"]) && u["toString"] !== Object.prototype.toString) {
return u["toString"]();
}
try {
JSON.stringify(u);
if (array_.isArray(u)) {
return `[${u.map(formatUnknown).join(",")}]`;
} else {
return `{${ownKeys(u).map(k => `${Predicate.isString(k) ? JSON.stringify(k) : String(k)}:${formatUnknown(u[k])}`).join(",")}}`;
}
} catch (e) {
return String(u);
}
};
/** @internal */
export const formatPropertyKey = name => typeof name === "string" ? JSON.stringify(name) : String(name);
/** @internal */
export const isNonEmpty = x => Array.isArray(x);
/** @internal */
export const isSingle = x => !Array.isArray(x);
/** @internal */
export const formatPathKey = key => `[${formatPropertyKey(key)}]`;
/** @internal */
export const formatPath = path => isNonEmpty(path) ? path.map(formatPathKey).join("") : formatPathKey(path);
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