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test("valid 'use strict; directive", () => {
expect(
(() => {
"use strict";
return isStrictMode();
})()
).toBeTrue();
expect(
// prettier-ignore
(() => {
'use strict';
return isStrictMode();
})()
).toBeTrue();
});
test("invalid 'use strict; directive", () => {
expect(
(() => {
" use strict ";
return isStrictMode();
})()
).toBeFalse();
expect(
(() => {
`use strict`;
return isStrictMode();
})()
).toBeFalse();
expect(
(() => {
"use\
strict";
return isStrictMode();
})()
).toBeFalse();
expect(
(() => {
"use\ strict";
return isStrictMode();
})()
).toBeFalse();
expect(
(() => {
"use \163trict";
return isStrictMode();
})()
).toBeFalse();
expect(
(() => {
`"use strict"`;
return isStrictMode();
})()
).toBeFalse();
expect(
(() => {
"use strict" + 1;
return isStrictMode();
})()
).toBeFalse();
});
|
