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feat(infra): di container (#5497)
docs: https://insider.affine.pro/share/055f9c4b-497a-43ec-a1c9-29d5baf184b9/N785YJ__oLMb2fUaLOv-k
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59
packages/common/infra/src/utils/stable-hash.ts
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59
packages/common/infra/src/utils/stable-hash.ts
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// copied from https://github.com/shuding/stable-hash
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// Use WeakMap to store the object-key mapping so the objects can still be
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// garbage collected. WeakMap uses a hashtable under the hood, so the lookup
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// complexity is almost O(1).
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const table = new WeakMap<object, string>();
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// A counter of the key.
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let counter = 0;
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// A stable hash implementation that supports:
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// - Fast and ensures unique hash properties
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// - Handles unserializable values
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// - Handles object key ordering
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// - Generates short results
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//
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// This is not a serialization function, and the result is not guaranteed to be
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// parsable.
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export function stableHash(arg: any): string {
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const type = typeof arg;
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const constructor = arg && arg.constructor;
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const isDate = constructor === Date;
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if (Object(arg) === arg && !isDate && constructor !== RegExp) {
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// Object/function, not null/date/regexp. Use WeakMap to store the id first.
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// If it's already hashed, directly return the result.
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let result = table.get(arg);
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if (result) return result;
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// Store the hash first for circular reference detection before entering the
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// recursive `stableHash` calls.
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// For other objects like set and map, we use this id directly as the hash.
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result = ++counter + '~';
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table.set(arg, result);
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let index: any;
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if (constructor === Array) {
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// Array.
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result = '@';
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for (index = 0; index < arg.length; index++) {
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result += stableHash(arg[index]) + ',';
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}
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table.set(arg, result);
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} else if (constructor === Object) {
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// Object, sort keys.
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result = '#';
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const keys = Object.keys(arg).sort();
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while ((index = keys.pop() as string) !== undefined) {
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if (arg[index] !== undefined) {
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result += index + ':' + stableHash(arg[index]) + ',';
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}
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}
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table.set(arg, result);
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}
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return result;
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}
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if (isDate) return arg.toJSON();
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if (type === 'symbol') return arg.toString();
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return type === 'string' ? JSON.stringify(arg) : '' + arg;
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}
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