TanTan
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36 lines
1.3 KiB
Plaintext
36 lines
1.3 KiB
Plaintext
/**
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* assert that condition is true or throw error (with message)
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*/
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export function assert(condition, msg) {
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if (!condition) {
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throw new Error(msg);
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}
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}
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/**
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* assert that value cannot exist = type `never`. throw runtime error if it does.
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*/
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export function assertNever(value, msg) {
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throw new Error(msg !== null && msg !== void 0 ? msg : 'Unexpected object: ' + value);
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}
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const FLOAT32_MAX = 3.4028234663852886e+38, FLOAT32_MIN = -3.4028234663852886e+38, UINT32_MAX = 0xFFFFFFFF, INT32_MAX = 0X7FFFFFFF, INT32_MIN = -0X80000000;
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export function assertInt32(arg) {
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if (typeof arg !== "number")
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throw new Error('invalid int 32: ' + typeof arg);
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if (!Number.isInteger(arg) || arg > INT32_MAX || arg < INT32_MIN)
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throw new Error('invalid int 32: ' + arg);
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}
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export function assertUInt32(arg) {
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if (typeof arg !== "number")
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throw new Error('invalid uint 32: ' + typeof arg);
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if (!Number.isInteger(arg) || arg > UINT32_MAX || arg < 0)
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throw new Error('invalid uint 32: ' + arg);
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}
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export function assertFloat32(arg) {
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if (typeof arg !== "number")
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throw new Error('invalid float 32: ' + typeof arg);
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if (!Number.isFinite(arg))
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return;
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if (arg > FLOAT32_MAX || arg < FLOAT32_MIN)
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throw new Error('invalid float 32: ' + arg);
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}
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